Behind The Scenes At Letterman

Ever wonder what they feed you in David Letterman's green room? Want to meet some of Katie's crew? Yes, all this and more can be yours with one click of the little "play" arrow.

And if you catch Letterman tonight, too, you'll see he gave Katie a phone call during the show to, um, correct what Katie says may have been a "brain synapse misfiring" on Dave's part. We'll let you be the judge.