Late Show with David Letterman S05 E57 Courteney Cox, Peyton Manning, Shania Twain

Grover Washington, Jr. sits in; Dave shows a Sing and Snore Ernie that he bought yesterday, and it's head tragically comes off with blood gushing out; Dave and Heisman Trophy candidate Peyton Manning go one-on-one in the latest Late Show QB Challenge.