Last Night on Late Night: When 30 Rock Has No Money for Music, Tina Fey Improvises


Last night, Tina Fey taught Jimmy Fallon how to freestyle your own Joni Mitchell when your NBC show has no money for music, David Letterman tried to provoke Jodie Foster into expressing any kind of opinion on The Beaver co-star Mel Gibson, Jimmy Kimmel gave us another excellent installment of "Steven Tyler's Creepy Leer of the Night," and Jon Krasinski went on Conan to do the marionette trick that everyone loves so much on The Office set. Watch our compilation to see what you missed.