Release date: May 23 The Wolfpack is back ... again. The third and supposed final entry in "The Hangover's" legacy takes Ed Helms, Zach Galifianakis and Bradley Cooper to Mexico, before heading back to where it all began: Las Vegas. After "The Hangover Part II" felt like little more than a rehash of the original, though, what else is left in this franchise? At least they're claiming it's the last movie, until the next one of course. -- Chris E. Hayner, Zap2it Warner Bros.