As usual, there will be a test tomorrow. Don’t forget your No. 2 pencils!

Monday, Nov. 16
Sean “Diddy” Combs – “The Ellen DeGeneres Show”
Kathy Griffin, Josh Wolf, Natasha Leggero and Ben Gleib – “Chelsea Lately”
Wyclef Jean and Cyndi Lauper – “Late Show With David Letterman”
Carrie Underwood – “The Tonight Show with Conan O’Brien”
Tim McGraw – “Late Night with Jimmy Fallon”
Chickenfoot – “Jimmy Kimmel Live!”
Ben Harper – “Late Late Show with Craig Ferguson”

Tuesday, Nov. 17
Matt Braunger, Randy and Jason Sklar – “Chelsea Lately”
The Script – “Late Show With David Letterman”
50 Cent – “The Tonight Show with Conan O’Brien”
Shakira, Cheech & Chong, Neko Case – “Late Night with Jimmy Fallon”
OneRepublic – “Jimmy Kimmel Live!”

Wednesday, Nov. 18
Carrie Underwood – “The Ellen DeGeneres Show”
Justin Bieber, Jeff Wild and Sarah Colonna – “Chelsea Lately”
Ray Davies – “Late Show With David Letterman”
Brian Setzer – “The Tonight Show with Conan O’Brien”
The Avett Brothers – “Late Night with Jimmy Fallon”
50 Cent – “Jimmy Kimmel Live!”
Lewis Black – “Late Late Show with Craig Ferguson”

Thursday, Nov. 19
Leona Lewis – “The Ellen DeGeneres Show”
50 Cent, Heather McDonald, Chris Franjola and Jo Koy – “Chelsea Lately”
John Mayer – “Late Show With David Letterman”
Leona Lewis – “The Tonight Show with Conan O’Brien”
Obits – “Late Night with Jimmy Fallon”
Carrie Underwood – “Jimmy Kimmel Live!”

Friday, Nov. 20
Chris Hardwick, Maz Jobrani and Loni Love – “Chelsea Lately”
Lyle Lovett, Paula Poundstone – “Late Show With David Letterman”
Bon Jovi – “The Tonight Show with Conan O’Brien”
Elvis Costello – “Late Night with Jimmy Fallon”
Death Cab For Cutie – “Jimmy Kimmel Live!”
David Gray – “Late Late Show with Craig Ferguson”