S5, Ep 10
Comedy Bang! Bang!
Zach Galifianakis Wears Rolled Khakis and Shoes with Brown Laces

It’s the 100th episode and Scott reveals some surprising plans. But when an accident puts the future in jeopardy, Zach Galifianakis, "Weird Al" Yankovic, and the Comedy Bang! Bang! gang look back on their favorite memories of Scott.