With Cameron Diaz on his show to promote "Bad Teacher" on Monday night, Dave took the opportunity to ask about the much talked about moment when cameras caught the movie star feeding Alex Rodriguez a handful of popcorn during last February's Super Bowl. A playful Diaz, who earlier said it was OK to call the New York Yankees star her boyfriend ("I do," she said), obliged Letterman with an "exclusive" telling of the moment and then took part in a funny bit when the comedian pulled out an oversized tub of popcorn and handed it over with implied instructions. Great stuff.