The "Hangover Part III" Hollywood Premiere: Cast Reveals Their Favorite Memories | NBC New York

The "Hangover Part III" Hollywood Premiere: Cast Reveals Their Favorite Memories

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    Bradley Cooper, Ed Helms, Zach Galifianakis, Ken Jeong, Heather Graham and director Todd Phillips chat at the Hollywood premiere of "The Hangover Part III." They describe their favorite memories from the franchise and what would it take for them to do a fourth movie.