Sean Matthew Whalen is an American actor, voice actor, and director. He is best known for the famous and oft-played "Got Milk?" commercial involving a history museum employee who can win a radio contest by guessing correctly who shot Alexander Hamilton in the famous duel. He is unable to say the correct answer of "Aaron Burr" because his mouth is full of peanut butter and he is out of milk. He is also known for his roles in films, his first one being The People Under the Stairs (1991).