Tina Fey Spoofs Palin on Letterman

Looking fabulous in a glam little black dress, "30 Rock" star Tina Fey appeared on "The Late Show" with David Letterman Wednesday night, and gave viewers a special treat... when she launched into her infamous Sarah Palin impression!

Discussing the midterm elections, Fey once again poked fun at the former Alaska governor. Check it out!