Wolfpack Only: The Hangover Retrospective (2013)

The definitive story of The Hangover Trilogy.

A documentary that explores the making of The Hangover Trilogy. It includes Zach's unlikely audition as "Alan," the truth behind Ed Helms missing tooth, the casting of a drug-dealing monkey and the wildly improbable rendezvous with a former president.

Genres: Documentary

Stars: Todd Phillips, Bradley Cooper, Ed Helms, Zach Galifianakis, Daniel Goldberg