Kara DioGuardi

Rex Lee

Kevin Farley

Bo Burnham

Glenn Howerton

Craig Robinson

Vanilla Ice

David Archuleta

Olivia Munn, Hanson

J.B. Smoove

Lisa Kudrow, Todd Barry, The Submarines

Mary Lynn Rajskub, Trace Adkins

Drew Pinsky, Ben Lyons, G. Love

Dana Carvey, Perez Hilton, Olivia Munn, Penn Jillette

Seth MacFarlane, Andy Richter & Jack Osbourne

Shirley Manson, Jennifer Morrison & Tom Pappa

Cheech Marin, Tommy Chong

Carl Reiner, Bo Burnham

Crista Flanagan

Niecy Nash

Tony Rock