Watch The Ellen DeGeneres Show Season 8 Episode 51 Online

He's a superstar singer, dancer and actor -- and he's one of Ellen's good friends. The one and only JUSTIN TIMBERLAKE is stopping by! The sexy guy is in the brand new movie "Yogi Bear" and currently stars in "The Social Network" -- which is getting Justin a lot of Oscar buzz! Last week, an incredible 14-year-old named GRAEME TAYLOR gave an inspirational speech defending a teacher for stopping gay bullying. Today he's here to tell Ellen what motivated him to do it. Thanksgiving isn't until Thursday, but today Ellen is kicking off Pranksgiving! She has quite the surprise planned!