Christopher Ashton Kutcher (born February 7, 1978) is an American actor and producer best known for playing Michael Kelso in the television series That '70s Show. He was the creator, executive producer, and host of the MTV celebrity prank show Punk'd. He is known for his roles in films such as Dude, Where's My Car?, Just Married, The Butterfly Effect , and The Guardian. He is currently married to actress Demi Moore.