Last Night on Late Night: Justin Bieber Tweets With Letterman on The Late Show


Last night, Justin Bieber gave Late Show host David Letterman an on-air Twitter tutorial, Amy Poehler warned the gang over at Conan about the dangers of online pumpkin porn, Internet death rumor victim Adam Sandler promised the Tonight Show audience that he'd never die in Switzerland, and Bill Paxton offered up a little-known fact about his post-Titanic hit-movie drought, on Late Night with Jimmy Fallon. Watch our compilation to see what you missed.