Before becoming all Brooklyn on Bored to Death, a young Zach Galifianakis was a struggling comedian honing his craft out West. And just like old footage of Jerry Seinfeld doing stand-up surfaced this year, here is Galifianakis in 1999, at just 30-years-old, doing his routine. It's noted on YouTube that this is just one year before he appeared on Letterman, "followed by his own aborted VH1 talk show, working on the road, film and TV appearances... and then came Hangover."
And here he is on Letterman in 2000, when Janeane Garofalo was guest hosting:
In more recent Galifianakis news, he plans to bring back Between Two Ferns! [via Laughing Squid]