please welcome chris elliott. how are you? >> i'm doing well. how are you?st a lot of weight. my wife got me hooked on this thing that you have probably read about called the nut lax diet? >> no. >> it's crazy. you eat a couple of chunks of exlax in the morning and you can have any kind of nut for the rest of the day. >> you will take a laxative and eat nuts all day long. >> a nut. >> this explains your if i seek. >> i prefer a cashew. >> i work out around the house. >> around the house? >> there is a lot of vacuuming going on. >> i see. >> my doctor doesn't think this diet is particularly healthy. >> why not? >> i'm on day 96 of it right now. you know, i have zero body fat, and the only problem is i am kind of groggy. i'm sort of sleepy a lot. i sleep about 15 to 17 hours a day. it starts pretty much right after breakfast. >> we have all read about how important good sleep is. >> you're right. >> it is important. >> i guess i'm ahead of the game with that. >> well, you know what? the results don't lie. you look fantastic. >> i don't want to interrupt you be

chris elliott. and music from frank turner and the sleeping souls. with cleto and the cletones.nd now, here's jimmy kimmel! [ applause ] >> hi, everybody. i'm jimmy. thank you for coming. so glad you're here.

we have a great lineup next week, robin williams, ray romano, zooey deschanel, chris elliott, david blainefamily," sarah silverman will be here which should be interesting. and we'll have music from charlie wilson, frank turner and the sleeping souls, and two nights with las vegas' own, the killers. next week on the show. please john us then! >> jimmy: our first guest is a very successful actor and author, and may i state for the record one of the most beautiful men to walk this planet earth; you can see him play our 35th president in "killing kennedy", which premieres sunday at 8 on the national geographic channel, please welcome rob lowe. ♪ ♪ [ cheers and applause ] >> jimmy: how is everything? >> everything is good my friend. >> jimmy: i don't know if this is something you say congratulation to, i know your son turned 18. >> my youngest turned 18 yesterday. i officially don't have children, i have men. >> jimmy: you do, men. finally. >> he says i'm 18, dad, i want to get a tattoo. >> jimmy: really? >> you know what, i don't want to hear those things. >> jimmy: did you say no. >> i am ei

for chris and so many others like him, the tradeoff is easy. >> reporter: when are you at your absolute happiest? >> when my grandma is happy. >> we thank josh elliottler. so glad you were watching tonight. stay in touch with us at abc news.com. of course 20/20 later and david muir right here at this desk all week. good night. good night. >>> tonight, adventures of bat kid. a 5-year-old leukemia survivor who came to san francisco to live his dream. >> how social media made friends out of old rivals. >>> and a closed door meeting with bart. >>> a former high school principal tells why he's passing himself off as someone >>> a little bewildered and bit end of the day, exhausted. a 5-year-old boy becomes the toast of the town and a national sensation. good evening, everyone. >> the city of san francisco was the center of an extraordinary event today, granting the wish of a 5-year-old leukemia patient who wanted to be batman. >> he is fromron ushered around the city in a black lamborghini bat mobile. the daring rescue of a woman tied up on the cable car line. >> catching a villain greenhanded today, rescuing a giant mascot from clutches of the penguin.