Season 18

E1. Brian Williams, Paula Abdul

Jan 3, 2011

E2. Tim McGraw, Shaquille O'Neal, Keri Hilson

Jan 4, 2011

E3. Jennifer Connelly, Dr. Oz, Justin Townes Earle

Jan 5, 2011

E4. Seth Rogen, Beau Garrett, the Walkmen

Jan 6, 2011

E5. Regis Philbin, Hannibal Buress, No Age

Jan 7, 2011

E6. Bill Cosby, a Top Ten List presented by Nicole "Snooki" Polizzi, the Black Keys

Jan 10, 2011

E7. Vince Vaughn, Mike Wolfe & Frank Fritz, Cage the Elephant

Jan 11, 2011

E8. Kevin James, Olivia Munn, The Low Anthem

Jan 12, 2011

E9. Kelsey Grammer, Amar'e Stoudemire, Gregg Allman

Jan 13, 2011

E10. Joan Rivers, Jeff Caldwell, Wintersleep

Jan 14, 2011

E11. Jack Hanna, Steven Tyler

Jan 17, 2011

E12. Betty White, Kim & Kourtney Kardashian, the Script

Jan 18, 2011

E13. Martin Short, Greta Gerwig, Darius Rucker

Jan 19, 2011

E14. Kaley Cuoco, Piers Morgan, Wanda Jackson, Miss Arkansas, Alyse Eady

Jan 20, 2011

E15. Nathan Lane, Mike Palascak, Esperanza Spalding

Jan 21, 2011

E16. Justin Bieber, Pauley Perrette, Best Coast

Jan 31, 2011

E17. Matthew Perry, Chris Elliott, Top Ten with Mitt Romney, the National

Feb 1, 2011

E18. Kate Walsh, Jim Gaffigan, Boxer Rebellion

Feb 2, 2011

E19. Howard Stern, Naughty By Nature

Feb 3, 2011

E20. Martha Stewart, Top Ten with Justin Bieber, Robert Plant

Feb 4, 2011

E21. Super Bowl MVP Aaron Rodgers, Martin Lawrence, Steel Magnolia

Feb 7, 2011

E22. Adam Sandler, Chris Colfer, Gang of Four

Feb 8, 2011

E23. Anderson Cooper, Elton John

Feb 9, 2011

E24. Nicole "Snooki" Polizzi, Judah Friedlander, Bryan Ferry

Feb 10, 2011

E25. Ed Helms, Ted Alexandro, Steel Magnolia

Feb 11, 2011

E26. S.I. Swimsuit Cover Reveal & Top 10, Tom Brokaw, Theophilus London

Feb 14, 2011

Tom Brokaw, a Top Ten List presented by 10 "Sports Illustrated" swimsuit models, Theophilus London

E27. Forest Whitaker, S.I. Swimsuit Cover Model Irina, Josh Groban, Top Ten with Joy Philbin

Feb 15, 2011

E28. Bill Hader, Grocery Bagging Champ Krystal, Amos Lee

Feb 16, 2011

E29. Paris Hilton, Nathan Fillion, Scissor Sisters

Feb 17, 2011

E30. David Spade, Andy Kindler, Lukas Nelson and Promise of the Real

Feb 18, 2011