Neil Patrick Harris on 'Letterman,' Jennifer Connelly on 'Conan'

Doogie? Or Barney? Which one is more quintessential NPH? Just a random TV thought to ponder before the holiday weekend...













"Late Show with David Letterman": Neil Patrick Harris, Steve Mazan, Edward Sharpe & the Magnetic Zeros

"The Tonight Show with Conan O'Brien": Jennifer Connelly

"The Late Late Show with Craig Ferguson": Radha Mitchell, DJ Qualls

"Late Night with Jimmy Fallon": Bob Costas, Jamie-Lynn Sigler, Pet Shop Boys

"Last Call with Carson Daly": Harland Williams, Aaron Fotheringham, Ben Harper & Relentless7 (repeat)

"Jimmy Kimmel Live": Gerard Butler, Nate Berkus, Maxwell

"The View": Lil' Wayne, Jamie Luner (repeat)

"Live with Regis and Kelly": Relly Award nominees: Favorite Ripa Dance Partner, Best Game, Favorite Athlete, Favorite Web Exclusive

"The Ellen DeGeneres Show": Cher, the Pussycat Dolls with Missy Elliott (repeat)

"Tavis Smiley": Terence Blanchard, Fred Kaplan

"Chelsea Lately": Stephan Jenkins, Bryan Callen, Natasha Leggero, Perez Hilton

"The Bonnie Hunt Show": Melissa Etheridge, Lucy Lawless, the Acme Missionary Baptist Choir (repeat)