Christopher Ashton Kutcher (born February 7, 1978), best known as Ashton Kutcher, is an American actor and former fashion model best known for playing Michael Kelso in the FOX sitcom 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, The Guardian and What Happens in Vegas. He is also the producer and co-creator of the supernatural TV show Room 401 and the reality TV show Beauty and the Geek. He is married to actress Demi Moore.