He's an absolute hypocrite!

He is totally resonsible for Mel Gibson's cameo in Hangover 2 being cancelled. Here's what he said: "I'm in a deep protest right now with a movie I'm working on, up in arms about something. But I can't get the guys to [listen] ... I'm not making any leeway."

Zach Galifianakis had no objections to starring in a film with Mike Tyson who was convicted of raping an 18-year-old and bit the ear off Evander Holyfield, yet he refuses to work with Mel Gibson who has not been charged (yet) with any crime. Yes, Mel was extremely insulting to Oksana in a series of private conversations and made other comments that were offensive, but to refuse to work with him (and be completely tolerant of Mike Tyson) is hypocritical.