White StripesConan O'Brien's last show in his old time slot was Friday night. A drumless White Stripes were the musical guest.

Conan won't be gone for long though. He takes over Jay Leno's slot, one hour earlier, on June 1st. Jay Leno airs his final show in his current time slot on May 29th, and then eventually moves to 10 pm on the same station.

Jimmy Fallon takes over Conan's NBC time slot on March 2nd. His house band The Roots take over NYC around the same time. Fallon's guest have started to be announced...

If Jimmy Fallon is nervous about the premiere of his new gig as "Late Night" host, he'll have Robert De Niro and Van Morrison to lean on. They'll be the guests for his March 2 debut hosting the NBC show...

NBC says Tina Fey, Jon Bon Jovi, Cameron Diaz, Drew Barrymore, Donald Trump and Serena Williams are among other guests scheduled for Fallon's first week. [Vindy.com]

U2U2 will be the first band to play five nights in a row on Letterman that same week. "Coinciding with the worldwide release of [their new album] No Line on the Horizon, it's the first time a musical guest has performed an entire week on the CBS late night broadcast." That new album is now streaming in its entirety at MySpace.

Van Morrison's Fallon appearance comes soon after his two shows at the Theater at MSG, and right before the two at the Beacon.

The video from Joaquin Phoenix's recent, infamous appearance on Letterman, below...

Joaquin Phoenix Odd Letterman appearance - 02/11/2009