Edie Falco visiting Regis, Renee Zellweger visiting Letterman

Reneezellweger When does Letterman get a vacation?

"Late Show with David Letterman": Renee Zellweger, Gary Mule Deer

"The Tonight Show with Conan O'Brien": Jonah Hill, Cheryl Hines, Dan Naturman (repeat)

"Late Late Show with Craig Ferguson": Lisa Kudrow, James Frey, Chairlift (repeat)

"Late Night with Jimmy Fallon": Cameron Diaz, Universal Records Database, Grizzly Bear (repeat)

"Last Call with Carson Daly": Joe Torre, Kelly Monaco, Operation Aloha (repeat)

"The Daily Show": Betsy McCaughey

"The Colbert Report": Chris Matthews

"Jimmy Kimmel Live": Quentin Tarantino, Rachel Nichols, Doug Benson (repeat)

"The View": Miss Piggy, Patty Stanger, Helen Fisher, Sarah Symonds (repeat)

"Live with Regis and Kelly": Edie Falco, Trinny Woodall & Susannah Constantine, guest co-host Tram Mai

"The Ellen DeGeneres Show": David Spade, Gilles Marini & Cheryl Burke (repeat)

"Tavis Smiley": Arne Duncan, Benjamin Barber

"Chelsea Lately": Dave Salmoni, T.J. Miller, George Wallace, Natasha Leggero

"The Bonnie Hunt Show": Joshua Jackson, Carrie Ann Inaba, Maurice Greene & Cheryl Burke (repeat)