If you've seen The Hangover, you know this dude is funny off top. Galifianakis, who starred as Alan in the summer blockbuster is well on his way to being the next comedian to blow up on the Hollywood scene. The category is littered by folks who got their big break in the same type of summer comedy. Steve Carrell, Seth Rogen, Jonah Hill, and Jason Segel to name a few. Looks like you can add Zach's name to that list soon. Conan does a solid job as usual with the interview. Outta pocket at times, but seriously entertaining. Tyson story starts around 5:00. Comedy.