Dave apologizes to Sue Hum for a pre-show accident; the show is interrupted by a performance of "Mark Twain Tonight!" starring Johnny Dark; Danny Devito plugs his new restaurant; Larry David (in his very first Late Show appearance) comments on Dave's hair; Avril Lavigne performs "When You're Gone."
Can you beat the speed camera? Can a ninja deflect a bullet with their palm? Can a person breathe from a car tire underwater? Will an RFID chip explode in a MRI scanner?