are dangling from the chain this is "nightline." >> tonight, he's been charged with murder. for shooting 50-year-old walter scott. and now there are new details coming to light about the south carolina officer's past. did he have a history of using excessive force? >> black lives matter! >> amid protests the police department facing questions. >> incidents he's had with other residents, we will look at that any questions anybody has we're willing to look at. >> what the report may reveal. who could be the next miley cyrus. there's a reason anne hathaway is doing her best "wrecking ball." and the rock is kicking off. for a few glorious minutes actors play pop stars when they take the stage on "lip synch

battle." tonight chrissy teagen tells us why celebrities like playing each other so very much. but first the "nightline 5." number one in just 60 seconds.

good evening. thank you for joining us.

tonight, new details about that fatal shooting in south carolina caught on camera. and video that's difficult to watch. an unarmed man shot in the back by a police officer. abc's steve osunsami on the ground with the latest amidst questions about what other officers did or did not do to help. as protesters renew their calls for body cameras. >> reporter: to so many tonight, enraged and shocked by the killing of another unarmed black man -- >> black lives matter! >> reporter: the truth of what happened to walter scott is only coming to life because someone in the bushes was recording with a camera and a cell phone. the pictures of north charleston policeman michael slager in jail stripes locked up without bail is devastating to police everywhere. now accused of murder he told his bosses that 50-year-old walter lamar scott had grabbed his stun gun after an argument over a traffic stop. >> shots fired, subject is down.

he grabbed my taser. >> reporter: in the video the unarmed father of four is running away after apparently being hit by the stun gun. tonight, new video moments after the shooting caught on camera appears to show slager giving a statement to another officer. north charleston police did act swiftly tuesday. >> he will be charged with murder. >> reporter: tonight they're under fire for something critics say is missing in the video. although the police report says they administered cpr, there's no evidence of that in the video that's nearly four minutes long. >> not every officer is cpr certified. >> reporter: scott did have an outstanding warrant for unpaid child support, but his mother says that's no reason for him to die. >> he has been raised in the church from day one. he sang on the choir. he played the drums. he would call his mom every single day. >> there's two families that are in a bad way right now. our prayers and thoughts go with

both of the families. >> reporter: we're learning much more about the accused police officer, who had plenty in common with the man he's accused of murdering. much like scott, michael slager was in the coast guard. he has a wife who's eight months pregnant and lives with two stepchildren. his work record shows two complaints in five years, including another incident with a taser. the only serious charge of excessive force, he was cleared. >> are you now taking a look at this officer's other arrests and other cases that he was involved in? >> we're still waiting on all the information to come back to us. >> other arrests he's made other incidents he's had with other residents, you're looking at those? >> we will look at that, any questions anybody has we're more than willing to look at. >> reporter: if slager is convicted he could be sentenced to death. a conviction alone could be a first, considering this. police in south carolina have fired their weapons on more than 200 people over the last five years. and in every case they were cleared. >> we're going to continue to strive to do what's right.

>> reporter: while the department has turned the investigation over to an independent agency, critics say race and inequality are at the heart of the problem. in north charleston, african-americans are nearly half the population but only 18% of the police force, where 80% of the officers are white. >> we recruit african-american members. the problem is we have a very limited number, even to the point that we started going out and recruiting from other departments. where we can get certified minority police officers to work for us. >> reporter: for communities of color who have been arguing for years that american police work is too often so unfair -- >> you cannot done 90 what was caught on this film. >> reporter: the release of this video and the alleged lie it suggests that came from this police officer is a watershed moment. with the emotional camera in every pocket, injustice is more likely to be caught on camera. from eric garner in new york who was accused of illegally

selling cigarettes, put in a 15-second choke hold, to this family in indiana, where a traffic stop for seat violations turns violent when they refuse to get out of the car. the family has since filed a lawsuit, though the department said the police officer were acting in the interests of their safety. the shooting of wall testify scott wasn't the first caught on camera in south carolina. last september an unarmed man was reaching for his wallet, shot by an officer. the man later received a $300,000 settlement from the state government and the officer was charged with assault. ow slager's case will end up remains unclear but change is going to come. today authorities here announce they're ordering more than 250 police body cameras. >> every officer that's on the street in uniform will have a body camera. >> we need to seriously as a nation expand the use of video, of body cams and dash cams by

police and law enforcement around the country. >> reporter: but critics say biased policing is a larger systemic problem. >> we want to alter the training and recruitment and the way that police officers advance. >> reporter: back in north charleston, they are satisfied with slager's arrest but furious over the killing of scott. the shooting of scott was captured on tape they say, but so many other injustices are not. >> all the time we've been talking about this systematic abuse. there wasn't a video to capture all those. this time there was. we're here to echo that sentiment, to call for a doj review of this whole institution. >> all the profiles, all the abuse by police -- >> reporter: protesters took this anger into a press conference where officers were explaining their new body cam

initiative. scott's family says it's a good change but they're suing, saying their son was treated worse than an animal in the street. >> when i looked at that tape, that was the most horrible thing i've ever seen. i am very very upset concerning it. i almost couldn't look at it. to see my son running, defenseless, being shot. it just tore my heart to pieces. i pray that this never happens to another person. this has got to stop. >> reporter: for "nightline," i'm steve osunsami in north charleston, south carolina. >> we'll have the very latest on this case in the morning on "gma." next, can't touch this. he won an oscar for "war," a song about struggle. why celebrities are leaving it all on the floor for "lip synch

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anne hathaway versus emily blunt. common versus john legend. no, this isn't celebrity "hunger games." it's the concept behind the ridiculous newhow that's got some of hollywood's brighter stars facing off on stage. abc's rachel smith gets in on the fun. ♪ >> reporter: it's safe to say this isn't how we're used to seeing the rock.

kicking it up to taylor swift. ♪ shake shake shake ♪ >> reporter: how about emily blunt? nailing. >> jimmy: no anna kendrick. passionately rapping this pitbull verse. these are some of the many celebrities hitting the stage in the new tv show "lip synch battles" hosted by l.l. cool j. what exactly is "lip synch battle"? >> simple, two celebrities perform two different songs and lip synch and the audience decides who did it the best. >> reporter: the winner is awarded the coveted champions belt. this is like a music talent competition, reality show, on steroids. because the talent celebrities, in a light we've never really seen them before. >> yeah, what it does is gives them a chance to kind of make fun of themselves, it gives the

celebrities a chance to play. they get to show the world they can have fun that they can be silly that they can make fun of themselves. >> reporter: supermodel chrissy keegan is the show's sideline color commentator. >> i don't know what my role is sometimes. i'm like, i am just having a great time. sometimes i feel like an audience member. and also i'm just a fan. i'm also watching it all. >> she's amazing. she's our colorful color commentator. ♪ >> reporter: as it so happens, lip synching is enjoying a major moment on social media. with over 20 million users and counting, dub smash has become one of the world's most popular app since it launched last november. people upload hilarious videos of themselves re-enacting popular songs like whitney houston's "i will always love you." iconic tv moments like kanye's vma rant against taylor swift. >> beyonce have one of the best

videos of all-time! >> reporter: not to mention movie scenes like jim carrey in "liar liar." naturally, i had to get in on the fun too with my go-to karaoke song. lionel ritchie's "all night long." ♪ all night all night ♪ >> reporter: and this. >> that's the party! >> reporter: might be as outlandish as it gets. >> you smell good. pine? >> reporter: the youtube page is called bad lip reading, a hilarious collection of dubbed videos like this from the nfl. >> taylor swift, you want to wrestle? >> reporter: this re-enactment of president obama's 2012 inauguration went viral. >> repeat after me. do i'll do the space man boogie. >> i'll do the space man boogie. >> i'll brush on my sassy face. >> i'll brush on my sassy face. >> there's two different einsteins.

>> there's two different einsteins. >> and your makeup. >> and your makeup. >> why do you think lip synching has become such a big success? you've got videos going viral. you've got an app that kind of dedicated to it as well. so what gives? >> people like to perform. and it's fun. it's a quick bite sometimes. it's fun to see people do things like that. i like the unexpected. it's exciting to me. i think people just love to be somebody else for a few minutes. my husband john was on it. he is not a rapper. he was so excited to rap. he was working that mc hammer. >> working it. my music made me! oh my lord. >> my favorite part is we taped it before like he was oscar-winner john legend. now we have oscar-winner john legend in hammer pants and glasses. >> reporter: we caught up with two of the show's executive producers, steven merchant and

john kaczynski. >> how did this show come to be? >> unromantic origin story. we were driving back from ohigh, california. >> play tunes and kind of start doing it for our own amusement. the more we talked about it the more it seeped like a great idea. >> when you see an amazing performer on stage you think, there's no way i could sing justin timberlake. but you could mime it. i think there's something about that, hopefully everyone at home is like, yeah, i can do this. ♪ >> there's things that you can't see. >> scandalous. >> there's things you're going to see that you'll never be able to unsee. >> really? >> yeah. >> both of you have insane sex appeal. >> we look as ridiculous as you can look. >> reporter: when it comes to viral video success, the ridiculous factor is almost always the common denominator. there's just something about these crazy moments that makes

it impossible to look away. from mike tyson singing -- ♪ work it baby ♪ ♪ won't you ever say i'll just walk away ♪ >> reporter: to anne hathaway swinging on miley's "wrecking ball." ♪ wrecking ball ♪ >> you asked her to perform on the show? >> i'm just hosting right now. we'll see what happens. >> it's a lot of fun and funny. it's funny and it's fun. >> i go home and my cheeks hurt. ♪ >> reporter: once-embarrassing hairbrush in hand moments reserved for the bathroom mirror, now on display for the world to enjoy. for "nightline" i'm rachel smith in hollywood. >> "lip synch battle" airs thursdays on spike. what's your go-to song for lip syncing or karaoke?

head to our "nightline" facebook page and let us know in the comments. next think fishing is relaxing? this extreme angler begs to differ. tonight we're diving in with him. i'm louis, and i quit smoking with chantix. i told myself for so long that i needed to quit smoking. i would quit then i'd go right back to it. chantix absolutely helped me quit smoking. along with support, chantix (varenicline) is proven to help people quit smoking. chantix helped reduce my urge to smoke. some people had changes in behavior, thinking or mood hostility, agitation, depressed mood and suicidal thoughts or actions while taking or after stopping chantix. some people had seizures while taking chantix. if you have any of these stop chantix and call your doctor right away. tell your doctor about any history of mental health problems, which could get worse while taking chantix or history of seizures. don't take chantix if you've had a serious allergic or skin reaction to it. if you develop these stop chantix and see your doctor right away as some can be life-threatening. tell your doctor if you have a history of heart or blood vessel problems or develop new or worse symptoms. get medical help right away

if you have symptoms of a heart attack or stroke. decrease alcohol use while taking chantix. use caution when driving or operating machinery. common side effects include nausea trouble sleeping and unusual dreams. i'm not worried about smoking my next cigarette. to me that feels great. ask your doctor if chantix is right for you.

finally tonight, there are fishermen, and then there are fishermen. abc's gloria riviera brings us this next adventure with an angler who doesn't shy away from danger in the water. >> reporter: from the rough and icy rivers of alaska to the muddy snake-filled waters of

cambodia. freshwater biologist and extreme angler jeremy wade is fishing for adventure. and today we're meeting him at harrington harbor on the chesapeake bay as he goes after his greatest catch yet. >> the' losivee ive >> exactly exactly. my nemesis. >> reporter: now in its seventh season, animal planet's "river monsters" follows wade as he unravels freshwater mysteries from the deep. >> what is it about oceans and rivers that you think fascinates people? >> it is this other world. it's the unknown. it's the unseen. it is genuine exploration. >> reporter: that other world of exploration has taken this underwater detective around the globe. into the most extreme and unlikely places. to debunk folklore of the submerged and discover something true. >> unbelievable.

>> we set out to make it a sort of -- an underwater detective story. it's somebody being underwater bitten, what i do is assemble a suspect list and then i sort of go after the perpetrator. and then arrest the perpetrator. which to me is catching it. >> reporter: our suspect today, the striped bass. on dinner tables across america and soon to be on the ends of our rods if all goes well. >> i don't want to -- >> it's overhead, yeah. >> reporter: fishing is big business in the u.s. in its latest report the u.s. fish and wildlife service counted over 33 million americans fishing annually and spent nearly $42 billion doing it. and it's not just that audience that helps river monsters reel in animal planet's most-watched premiere in network history last year. >> that shark took that herring right in front of my face. >> reporter: wade says the

program appeals to surf and turf lovers alike. >> it's not really about the fishing. the fishing is the process the means to an end. give it a bit more of a vigorous twitch. >> reporter: back on the chesapeake, jeremy is teaching me a thing or two about my form. i'm riding a wave of beginner's luck. >> all right! >> reporter: striped bass. not exactly the jaws of the chesapeake bay. but much of jeremy's work does put him in what could be harm's way. amongst unpredictable creatures and uncharted waters. >> do you have fear in your work? >> absolutely, yeah. i mean, people do say -- some people do say that i am fearless but i would say one of the themes of the program is fear. >> reporter: perhaps it's that fear, the mystery of the unknown, that keeps audiences on the hook. >> without really preaching conservation, it's sort of getting that message out in a nice friendly way to the next generation. >> reporter: today's journey to the deep for jeremy's white whale, the striped bass a

success. and hey, we didn't even need a bigger boat. for "nightline," i'm gloria riviera on the chesapeake bay in maryland. >> "river monsters" airs sunday nights on animal planet. it was newspaper columnist doug larsen who said if people concentrated on the really important things in life, there'd be a shortage of fishing poles. thank you for watching abc news. as always we're online at abcnews.com. good night, america. hey. hey, frank. how are ya? here. what's this? i don'know some porcelain thing you gave us for our 30th anniversary or some other terrible occasion. why are you givin' it baback to me? marie says she doesn't like it and she never did. so she sent you over here with this? that's right. i'm

marie's stinkin' messenger service since you two stopped talkin' to each othe okay, frank, okay. all right. okay. you know who she does talk to? me. nonstop. so do me a favor-- if you're upset, please shoot the messenger. ( object shatters ) hellooo. well.... just dropped the kids off at their playdate, and now it's time for mine. not now, ray. oh, i beg to differ. ray! i had a feeling yoyou might change your mind and that's why, if you remember, i had you sign a certain document. do you know what just happened? i must tell you, i do not care.