Actor Hugh Laurie; comic Joel McHale; the Gaslight Anthem performs.

Comic Stephen Colbert; actress Keri Russell; the Lee Boys perform.

Actor Ethan Hawke; actress Nikki Reed; Plain White T's perform.

Musician Kanye West; actor Seth MacFarlane; Kanye West performs.

Actor Hugh Jackman; Marge Kilndera of the Butter Ball Turkey Hotline; Tom Morello performs.

Actor Kiefer Sutherland; TV and radio personality Rachel Maddow; Vampire Weekend performs.

TV personality Rosie O'Donnell; actress Becki Newton; Brian Wilson performs.

Comic Martin Short; author Sarah Vowell; Margot & the Nuclear So & Sos perform.

TV show host Jeff Corwin; actress Debra Messing; author John Hodgman.

Rapper Snoop Dogg; comic Brian Regan; Blitzen Trapper performs.