Mary-Louise Parker visiting Letterman, Mark Feuerstein stopping by 'Conan'

Anyone keeping up with "Weeds"?

"Late Night Talk Show with David Letterman": Mary-Louise Parker, Eugene Levy, Jet

"The Tonight Show with Conan O'Brien": Quentin Tarantino, Mark Feuerstein, Smokey Robinson

"Late Late Show with Craig Ferguson": Eric Idle (repeat)

"Late Night with Jimmy Fallon": Lauren Graham, Bill Engvall, The Jonas Brothers (repeat)

"Last Call with Carson Daly": The Airborne Toxic Event (repeat)

"The Daily Show with Jon Stewart": Peter Laufer (repeat)

"The Colbert Report": Specialist Tareq Salha, Sgt. Robin Balcom (repeat)

"Jimmy Kimmel Live": Gordon Ramsay, Rob Zombie, Friendly Fires

"The View": Jay Leno, Carrie Ann Inaba, Len Goodman, Bruno Tonioli, Lady Gaga (repeat)

"Live with Regis and Kelly": Hugh Jackman, Tom Hanks, Ciara (repeat)

"The Ellen DeGeneres Show": Alyson Hannigan, 11-year-old hero Brandon Wilson (repeat)

"Tavis Smiley": Reba McEntire

"Chelsea Lately": Backstreet Boys, Loni Love, Chris Franjola, Dan Levy

"The Bonnie Hunt": Mo'Nique, Mike Mozart, Chris Lowell (repeat)