The Hangover (2009)

Cast: Bradley Cooper, Ed Helms, Zach Galifianakis, Justin Bartha, Heather Graham
Director: Todd Phillips
Writers: Jon Lucas, Scott Moore
Release Date: 5 June 2009 (USA)
Plot: A Las Vegas-set comedy centered around three groomsmen who lose their about-to-be-wed buddy during their drunken misadventures, then must retrace their steps in order to find him.
Plot Keywords: Wedding, Party, Morning After, Hotel, Hotel Suite