24 Zach Galifianakis Moments That Make You Laugh Every Time

From The Hangover to Saturday Night Live to Between Two Ferns, Zach Galifianakis has brought us more than a few laugh-out-loud moments over the past few years. Galifianakis turns 45 this week, so to celebrate, we're taking a look at some of the actor's most memorable one-liners, facial expressions, and hilarious dance moves. Who could forget Alan's amazing hair flip, or that time Galifianakis entered a Jennifer Aniston lookalike contest for an SNL skit? Behold, 24 Zach Galifianakis GIFs that are sure to make you crack up.

Source: Warner Bros.