11x127 - Late Show with David Letterman

Dave announces that he's going to be "more dynamic," resulting in spasm-like movements by him and Paul; to accompany Steph/Monty/Smitty dressing as Amelia Earhart for Mailbag, Dave repeatedly orders to hear airplane SFX inbetween letters; Julianne Moore tells Dave what it's like to kiss Barbara Walters.