Zach Galifianakis shows up on the sets of various NBC shows (with fictional scenes and archival footage) either talking to the actors, or just standing in the background.

Zach Galifianakis interviews young children as possible candidates for being his assistant.

Saturday Night Live celebrates 40 years in a star-studded 3-and-a-half hour live special featuring appearances from former and current cast members, past hosts and guest stars.

The award-winning sketch show celebrates its 50th anniversary live from New York, featuring musical performances, former cast members, special guests and all-time favorite sketches.