Comedy Bang! Bang!

Kevin Bacon Wears a Blue Button Down Shirt and Brown Boots

The Lonely Island Wear Dark Pants and Eyeglasses

Tony Hale Wears a Blue Flannel Shirt and Fuchsia Sneakers

Tegan and Sara Wear Leather Jackets and Skinny Jeans

T-Pain Wears Shredded Jeans and a Printed Shirt

Aubrey Plaza Wears a Velvet Off-the-Shoulder Gown With Flowers in Her Hair

Joe Jonas Wears a Maroon and Gold Letterman Jacket With White Sneakers

Nathan Fielder Wears a Blue and Grey Flannel and Jeans

Kristen Schaal Wears Strawberry Colored Pants and a Multicolored Shirt

Kristen Schaal displays her real voice as Paul Rust drops in to debut his "New No Nos," and Weird Al's birthday is celebrated, but one family member isn't in a happy mood.

Zach Galifianakis Wears Rolled Khakis and Shoes With Brown Laces

Scott unveils some surprise plans as Zach Galifianakis, "Weird Al" Yankovic and the "Comedy Bang! Bang!" gang recall favorite memories of the host.

Kaley Cuoco Wears a Black Blazer and Slip-on Sneakers

Gillian Jacobs Wears a Gray Checkered Suit and a Red Bow Tie

Scott Aukerman Wears a Tailored Black Suit

Krysten Ritter Wears a Turtleneck and Black Boots

Allison Janney Wears a Chambray Western Shirt and Suede Fringe Boots

Ben Folds Wears a Black Button Down and Jeans

Malin Akerman Wears a Black Blouse and Cropped Jeans

Mike Colter Wears a Pink Button Up and Black Boots

Reggie Watts Wears a Purple and Yellow Quilted Sweatshirt

Lord Andrew Lloyd Webber Wears A Purple Top Hat & Fabrice Fabrice Wears One Pink Fur Leg Warmer