Look. I'm excited, you're excited, we're all pretty much excited to see Zach Galifianakis host Saturday Night Live this coming Saturday. His appearance last night on Late Night with Jimmy Fallon did nothing to diminish this mutual glee. In fact, it just proved that 30 Rock (the building) is home of fun times, USA, this week.

First, Fallon and an unbilled Galifianakis performed in the sketch routine, "Let Us Play With Your Look."

Then, after a commercial break, Galifianakis talked to Fallon about hosting SNL. Is it "sketches" or "skitches"? Roll the clip!