In case Mel Gibson Liam Neeson, Jamie Chung, and returning bit players Ken Jeong and Mike Tyson weren’t enough, The Hangover 2 has brought on Paul Giamatti to round out its supporting cast. Giamatti will join returning stars Bradley Cooper, Zach Galifianakis, Ed Helms, Justin Bartha and director Todd Phillips (Due Date) in Thailand in the next few weeks, according to Deadline. No word on who Giamatti will play, or how large his role will be.

Giamatti recently popped in for a hilarious cameo on NBC’s 30 Rock, where he played a hammy Civil War-loving studio editor. Currently he is vying for some Oscar love for his work in Richard J. Lewis’ Barney’s Version opposite Dustin Hoffman and Minnie Driver. The Hangover 2 is set for a May 26, 2011 release.