Comic Zach Galifianakis discusses his place in the pantheon of comic actors and talking dogs.

Zach Galifianakis joins Scott on the couch for a very special holiday moment. Scott learns an important lesson about the meaning of Christmas when the bonuses get lost. Plus, we find out about Grumplegus the elf and finally meet Scott's mom.

A flash forward to the final episode; Zach Galifianakis makes his first appearance since his big accident; characters from past seasons come back to say goodbye; ongoing storylines get resolved; a surprise wedding.

It’s a drowsy day in the studio as the cast and crew keep dozing off. Reggie dreams of making music with Tears for Fears. Will Scott find the key to keeping everyone awake?

Zach Galifianakis, "Weird Al" and the Comedy Bang! Bang! crew look back at at their favorite memories of Scott.