Plot: Dave welcomes late night talk show host Conan O'Brien, musical guest Regina Spektor, and musician John Mayer sits in with Paul Shaffer & the CBS Orchestra.
Conan O'Brien tells Dave about the differences between himself and Jay Leno

Late Show With David Letterman - Season 19 - Conan O'Brien, Regina Spektor, John Mayer (Episode 75)
Episode Aired On:
Thursday, May 17 2012
12 years ago
Thursday, May 17 2012
12 years ago