this is "nightline." >> tonight, mansion wars. some bigger than the white house. this gigantic home movie theater. 5,000-bottle we'll wine cellars. celebrity views. why are neighbors like jennifer aniston up in arms? tonight how they're fighting back. survival in the snow. a heart-pounding rescue a snowmobiler buried in an avalanche. with americans facing record cold and more snow this holiday weekend, how you can survive when mother nature turns deadly. 50 shades of funny. at long last the breathlessly anticipated movie is here. if you're less of a lover and more of a hater -- >> sing a song and a leash. >> this parody is for you.

but first, the "nightline 5." ♪ i kiss her she kisses me ♪ ♪ like the fellow once said ain't that a kick in the head ♪ >> welcome to the most social car we've ever designed. the all-new nissan morano. nissan. innovation that excites. >> number one in just 60 seconds.

good evening. thanks for joining us. we're about to take you inside 80

80 gigantic mansions that come with gigantic price tags along with an unexpected dose of drama. >> there is 13 bedrooms. there is about 20 bathrooms in total. >> wow. >> reporter: real estate developer mohammad habib has made a career building luxury hotels and homes for the uber rich. >> hello! >> reporter: such as this one showcased on bravo's reality show "real housewives of beverly hills" featuring his ex-wife yolanda foster and gigi hadid. >> we brought these from northern california. >> reporter: these days hadid is not making many friends in beverly hills or more exclusive bel air. >> this is actually one of the medium-sized ones. this is about i would say 30,000 square feet. >> reporter: from high-end developers seem to be done with mega mansions tearing them down for the new giga mansions. and nearby relevance dents like jennifer aniston, whose house is 8,500 square feet are fighting

back. voicing outrage to city officials. the very idea that a building of 90,000 square feet can be called a home seems at the least a significant distortion of building codes." this 50,000 square foot mansion built and lived in by hadid has a 300-seat ballroom turkish bath large infinity pool and 5,000 square foot guest suite. >> why build homes this big? >> there's a need for it. you have customers asking for it. >> reporter: the ultra-rich living richer. he says a new generation of global billionaires is driving this construction boom. >> this is not your typical in-home theater. >> reporter: they want it all. >> they expect to have a theater in these mansions. from 20 seats up to 50rr 70 seats. >> what is the number one amenity buyers are looking for when they are purchasing a house of this magnitude? >> entertainment area. they want to have the splash to have a full 300 people at the party.

you need to have bar areas, outdoor area. something specific about a house that is different than anybody else. >> reporter: that includes outdoor landscaping that feels hike a resort. a swimming pool that stands out. maybe two or three. and the best location. luxury mansions soaring beyond 20,000 square feet are popping up on street after street. some 40,000 square feet. and some reaching a staggering 90,000 square feet. bigger than the white house and taj mahal combined. this boasts a 3,000 square foot master suite, three living rooms, salt water pool. it could be yours for $65 million. for some this giga construction seems more like giga invasion. >> this is the backyard. the wonderful part about this house. >> reporter: just yards from entertainment attorney joe horocek's front door this

30,000 square foot hall of glass and cement is being built by hadid. >> do you feel he's invadeing your privacy? >> privacy is completely gone. >> reporter: for 15 years he's lived a quiet life tucked away in the hills until hadid bought the house behind him and excavated thousands of cubic yards of soil from the hillside. >> i see the star ship "enterprise." and i get very angry also. >> what's your biggest concern? >> biggest concern is a combination of the total invasion of privacy, the total disregard which i believe mohammad hadid has for the building code and for the safety of living beneath it. >> you think the house could end up in your property? >> i think there's clearly that chance. >> reporter: the city of los angeles is not happy either. they've issued a stop work order. >> you had your permits revoked

and a stop order on construction? >> correct. >> why was that? >> well the neighbor has complained to the city. and they decided that they want to look into it. we got our permits correctly. >> you can see the ocean from here. >> you can see it's -- the place is a modern home. >> reporter: hadid showed us the property from his perfectspective where you can see horacek's house directly below. >> whoever's going to live here is not going to stand here hook down. he can put shrubs, other things. >> reporter: once finished this giga mansion will have two wine cellars, a moving bar that swivels, a wrap-around infinity pool. >> you have the people with the yacht, the plane, the houses. they're buying in l.a. >> reporter: real estate expert david kramer said it started with the sale of aaron spelling's 56,000 square foot

home. >> people saw the reality of we have buyers here. >> reporter: he sold the spelling manor for $85 million. and says it opened the flood gates for larger luxurious homes. >> who can afford these homes? >> everyone thinks it's foreign buyers? it's everybody. local, entertainment, hedge fund banking, computer definitely technology people then a lot of foreign buyers. 30% to 40% are foreign buyers. >> reporter: all this development comes at a price. some irate neighbors pointing to the death of two lapd officers killed by construction vehicles. police officer nicholas lee was killed last march when a dump truck returning from a construction site then two months later an out of control cement truck overturned on the same road. re's another truck. >> there's another truck. >> reporter: as a result, fred rosen, former ceo of ticketmaster, who recently founded a neighborhood alliance cringes at every large truck in his neighborhood.

>> is this a regular occurrence on your street? >> yeah. >> people at home who are going to watch and say, this is a fight of millionaires against approximately fair s billionaires. >> i know, there's always somebody with more, so that's not the issue. we want to be safe. >> the one straight ahead -- >> reporter: maureen levin soon bel air mother of two, is a member of the neighborhood alliance. she became sort of a modern-day vigilante over a massive 90,000 square foot property up the road. >> are you with the construction site up here? >> there's wildlife here. and that's the way bel air used to be. very peaceful and quiet. >> now you have a truck -- >> oh, yeah. three trucks going through. >> reporter: levinson's neighbors, 8,000 and 10,000 square foot homes, are some of the homes considered to be tear-downs. >> that's a million-dollar view. >> that's a $10 million view. >> reporter: but this --

neighbors are viewing with so many giga mansions going up. >> they would come in convoys like freight trains. >> reporter: now some are waiting for this ultra-rich real estate bubble to burst. >> do you think you'll ever have quiet again? >> not for many many many years. >> reporter: until then, if you can afford a house of this magnitude and want to throw a party for friends, mohammad hadid has a few ideas. >> this is a wine cellar. >> how many bottles of wine? >> this is a 5,000 bottle of wine wine cellar. i haven't counted. >> reporter: for "nightline" i'm brandi hitt in los angeles. is there any escaping this? we're sharing our extreme cold weather survival skills. later on "nightline," the sexy group of actors throwing

shade at "50 shades of grey." at matters most. like when i found out i had a blood clot in my leg. my doctor said that it could travel to my lungs and become an even bigger problem. so he talked to me about xarelto®. >>xarelto® is the first oral prescription blood thinner proven to treat and help prevent dvt and pe that doesn't require regular blood monitoring or changes to your diet. for a prior dvt i took warfarin, which required routine blood testing and dietary restrictions. not this time. while i was taking xarelto®, i still had to stop racing, but i didn't have to deal with that blood monitoring routine. >>don't stop taking xarelto®, rivaroxaban, unless your doctor tells you to. ile taking xarelto®, you mabruise more easily and it may take longer for bleeding to stop. xarelto® may increase your risk of bleeding if you take certain medicines. xarelto® can cause serious bleeding, and in rare cases, may be fatal. get help right away if you develop unexpected bleeding, unusual bruising, or ngling. if you have had spinal anesthesia while on xarelto®, watch for back pain or any nerve or muscle related signs or symptoms.

do not take xarelto® if you have an artificial heart valve or abnormal bleeding. tell your doctor before all planned medical or dental procedures. before starting xarelto® tell your doctor about any conditions such as kidney, liver, or bleeding problems. xarelto® is proven to reduce the risk of dvt and pe, with no regular blood monitoring and no known dietary restrictions. treatment with xarelto® was the right move for me. ask your doctor about xarelto® today.

nexium® 24hr. it's the purple pill the #1 prescribed acid blocking brand available without a prescription for frequent heartburn. get complete protection. nexium level protection™ ♪ ♪ the bold nissan rogue, with intuitive all-wheel drive. because winter needs a hero. now get 0% financing or up to $1,000 back on the 2015 nissan rogue. nissan. innovation that excites. hey amanda sorry to bother you, but i gotta take a sick day. vo: moms don't take sick days, moms take dayquil. vo: the non drowsy coughing, aching, fever, sore throat, stuffy head power through your day medicine.

you're about to witness

mother nature turning deadly in the bling of an eye. with extreme winter weather heading our way this holiday weekend we're going inside an avalanche. what happens if you get stuck in a pounding rush of snow? abc's brave matt gutman learning how to escape the hard way, firsthand. >> reporter: snowmobiler sam be robinson expected to charge up this mountain. >> whoa challenge. >> reporter: he didn't expect the mountain to charge back at him. his snowmobile triggered an avalanche. his friends going to the right to avoid the tsunami of snow. then they race to their friend. >> there's also the fact that you could be going to uncover or dig out a dead guy. >> reporter: his buddy cleared off his face and airway. >> where is he? >> you can't breathe and you don't know when you're going to stop. you don't know whether you're going to stop at the bottom of

the 35-foot pile of snow or if you're going to stop on the top. that's the part when it's most scary. >> reporter: but this happens all the time. this is cody strong getting blind-sided. by an avalanche he never saw coming. >> [ bleep ]. >> reporter: you see him ragdoll. check this out. see the snow on the ground starting to crack like a shattered window? a romanian snowboarder catches the moment before and terrifying moments during the time he was in an avalanche. big mountain snowboarder travis wright needs all his skills to try to outrun this avalanche, deftly navigating his way down the climb. and mike lansig not the same luck. gobbled up by the avalanche and tossed down the mountain.

miraculously he's okay. >> [ bleep ]. >> reporter: every year more than 150 people die in avalanches world wide. avalanches can release enough snow to fill 1350 dump trucks. and can bury entire villages, like this one in italy last year. >> you want to get in? >> reporter: they're also survivable. to learn how we traveled to avalanche country in the canadian rockies teaming up with avalanche experts at the resort ski patrol. avalanches can blast down the mountain at 200 miles per hour. so if you can't move and you're in it -- >> you can think of it as a tsunami wave. you're swimming through it. trying to stay at the top of the wave. to not drown. because that's the biggest concern is not being crushed to death or hit, but it's asphyxiation. >> cover your head to give

yourself an air pocket. how much of an air pocket do you need? >> you don't need much. you just need enough to continue to breathe. >> reporter: if you're trapped, suffocation is the biggest concern. create as big an air pocket around you as possible and try to control your breathing. experts say you can survive for hours that way. better yet deploy an avalanche air bag. without that air bag, you may wind up being buried. something i actually volunteered to do. going six feet under in snow didn't sound that stressful at first. >> get him in the hole. >> reporter: until i got that order. >> oh, god help me. >> reporter: in case you can't tell i was really freaked out. can. >> reporter: my sole companion, a beacon that will send out a signal to snow patrol. >> you can see that red light. it's a little tight. >> nothing to do but wait. >> reporter: the patrollers don't know where i am but hale does. >> time ticks by so slowly.

i think i hear footsteps but it's my heartbeat. >> reporter: 20 minutes later they triangulate my position using that beacon. finally digging through the snow once they got close. >> there it is. whoo! >> how you doing? >> you're a sight for sore eyes. >> reporter: in order to keep the slopes safe resorts like kicking horse pinpoint potential trouble areas and actually trigger their own avalanches with explosives. >> basically what you're making is a rudimentary bomb. >> it is a bomb. >> reporter: they chuck those bombs over a possible avalanche so skiers don't inadvertently do it themselves. >> we have two bombs that we just dropped. >> reporter: the avalanche we expected, the blow-back of black soot not so much. making bigger avalanches means bigger explosives. hale's team detonated a pair of bombs to protect the ski trails

alone. >> 50 pounds of explosives right there. >> reporter: to get a better sense of the impact of an avalanche, we recruit these two dummies. outfitted with go pros this one even has an avalanche air bag and i pull the cord as he's lifted up. they hold out and drop right in the middle of another planned avalanche, this time using even more powerful explosives which we all get to the chopper and pile in. >> i've got 50 pounds of explosives. >> reporter: we light the fuses in the chopper and it's bombs away. just a few minutes later, our cameras capture the moment the avalanche buries the dummies. lodged so firmly in the snow it took weeks to get our cameras there. >> what surprises a lot of people about avalanche is they think, it's snow, dig yourself out. there's no digging out of it. >> absolutely not. it sets up like concrete in minutes. >> reporter: sam robinson's friends needed shovels to get t.

would he do it again? you know the answer. >> it's always fun to push the extreme. for people like me. but it's scary when the extreme pushes back. >> reporter: but maybe a little more cautiously next time. i'm matt gutman for "nightline." next the hotly anticipated "50 shades of grey" movie is leaving some critics cold. but there are actors steaming up the stage tonight with their own takes on the erotic thriller. ♪ we're on a mission, a mission for underwareness, a cause to support the over 65 million people who may need the trusted protection of depend underwear. join us. drop your pants for underwareness and show off a pair of depend. because wearing a different kind of underwear, is no big deal. support the cause and get a free sample of depend

at underwareness.com. ♪ ♪ the nissan rogue, with safety shield technologies. the only thing left to fear is your imagination. now get 0% financing or up to $1,000 back on the 2015 nissan rogue. nissan. innovation that excites.

face it, whether you love it or hate it "the 58 shades of

grey" juggernaut is headed to a box office near you. tonight there's a musical version even more over the top. we welcome abc's candace gibson to "nightline" with this report. >> i don't do romance. ♪ do what no one else can ♪ >> welcome to my world. >> reporter: >> reporter: "50 shades of the gray," the book turned potential blockbuster, premiering this weekend to screams of passion. >> exhilarating. >> the best word to describe it. >> reporter: the film stealing hearts this valentine's day weekend. expecting to rake in $100 million. >> you're here because i am incapable of leaving you alone. >> then don't. >> reporter: but some throwing 50 shades of hate "usa today" calling it a tedious s and m melodrama that may feel like its own form of torture. "us weekly" writing, one of its 50 problems, the stilted and cheesy dialogue.

love it or hate it there's no doubt the 50 shades phenom has become an industry. from lingerie and products -- >>. ♪ open my eyes and see all 50 shades ♪ >> reporter: there's "50 shades: the musical parody." so kinky it's comical. >> he raped me very hard every night. >> me too, so it's okay. >> what about this one with the feather? >> reporter: we go to backstage tour at this musical parody in new york city learning the intimate details of the production. >> a leash, i get to sing a song in a leash, that's fun. he walks me like a dog. like so. >> reporter: and this weekend, sold out. >> how long does wardrobe take you? >> surprisingly a lot longer than you would expect. i know i don't wear a shirt but i wear leather pants and these do not go on that easily. >> reporter: where else could you get this close and personal?

>> after the show frequently we'll have people asking for >> they had you at yes, right? >> usually i'm okay with it as long as i'm not hurting them. >> my tastes are very -- singular. >> reporter: but this weekend, "50 shades of grey" could be seeing a lot of green. >> that's for sure. thanks for watching abc news. tune into "good morning america" tomorrow. and as always we're online at abcnews.com. go don't read at the table. hey, i'm reading that! i didn't finish that! no. [muttering] and stop playing with your hair. you're going to make it fall out. you can stop worrying about my hair, 'cause i'm gonna shave the rest of it off.. what?! that's right. i'm shaving my head today. oh, that's asinine. it's not asinine. it's hip. hey. we're out of milk.

help yourself. you want to hear the latest? your father wants to shave his head. why don't you just stick your head out the car window? where's my razor?! oh, sit down! we do not shave our heads in this house. it's my house and my head! i will not be seen with you like that. another advantage! m hiding all the razors. you're not going to shave your head. of course not. i just want to read the paper.