Heather Graham and Ed Helms in The Hangover (2009)

Bradley Cooper and Zach Galifianakis in The Hangover (2009)

Justin Bartha, Bradley Cooper, Zach Galifianakis, Ed Helms, and Nathalie Fay in The Hangover (2009)

Bradley Cooper, Zach Galifianakis, and Ed Helms in The Hangover (2009)

Ken Jeong, Michael Li, and Ian Anthony Dale in The Hangover (2009)

Jeffrey Tambor, Sasha Barrese, and Sondra Currie in The Hangover (2009)

Mike Tyson, Bradley Cooper, Zach Galifianakis, and Ed Helms in The Hangover (2009)

Todd Phillips and Ed Helms in The Hangover (2009)

Rachael Harris and Ed Helms in The Hangover (2009)

Justin Bartha, Bradley Cooper, Zach Galifianakis, and Ed Helms in The Hangover (2009)

Bradley Cooper and Ed Helms in The Hangover (2009)

Heather Graham, Justin Bartha, Bradley Cooper, Zach Galifianakis, and Ed Helms in The Hangover (2009)

Mike Tyson, Bradley Cooper, Zach Galifianakis, Ken Jeong, and Ed Helms in The Hangover (2009)