The Wolfpack heads back to their old stomping grounds of Las Vegas in the first TV spot for The Hangover Part III. This new footage also features Zach Galifianakis displaying his beautiful singing voice, and his bizarre purchase of a giraffe. Although there is no wedding for these characters to rush back for, this new video proves there are plenty of strange antics for these guys to get into in the final installment of this hit comedy franchise.