Conan to debut with Will Ferrell tonight, Bill Cosby & Paula Abdul to stop by 'Letterman'

Conanobrien A lot of good stuff today. Bill Cosby and Paula Abdul are both doing "Letterman" -- hope there's some interaction between those two, but I don't know why -- Paris Hilton's on "The View" -- fingers crossed Joy gets a few good jabs in at her expense -- Mary Louise Parker's on "Ferguson" and Conan debuts with Will Ferrell...

"Late Show with David Letterman": Bill Cosby, Paula Abdul

"The Tonight Show with Conan O'Brien": Will Ferrell

"Late Late Show with Craig Ferguson": Mary Louise Parker

"Late Night with Jimmy Fallon": Will Forte

"The Daily Show with Jon Stewart": Bob Woodruff

"Jimmy Kimmel Live": Shawn Johnson and Mark Ballas (repeat)

"The View": Paris Hilton

"Live with Regis and Kelly": Jillian Harris, co-host Pat Sajak

"Chelsea Lately": Kendra Wilkinson, Jay Manuel

"The Bonnie Hunt Show": Howie Mandel (repeat)