IGN: "The plot thickens. It was just a few days ago when Zach Galifianakis seemingly slammed his currently shooting sequel to The Hangover. And now word has come that the rumored Mel Gibson cameo in the film isn't even a rumor anymore.
Which is to say, it's not happening. The once mighty Variety has the report. Director Todd Phillips said in a statement: 'I thought Mel would have been great in the movie and I had the full backing of [Warner Bros. boss] Jeff Robinov and his team. But I realize filmmaking is a collaborative effort, and this decision ultimately did not have the full support of my entire cast and crew.'"