Christopher Ashton Kutcher (born February 7, 1978) is an American actor 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'. Kutcher has dated actresses January Jones (from 1998 to 2001), Ashley Scott (from 2001 to 2002), Monet Mazur (2002), and Brittany Murphy (from 2002 to 2003). Following his break-up with Murphy in early 2003, Kutcher began dating Demi Moore; reports in the media frequently commented on the fifteen-year age difference between the two. Moore and Kutcher married on September 24, 2005 in a private ceremony conducted by a rabbi of the Kabbalah Centre; the wedding was attended by about 100 close friends and family of the couple, including Bruce Willis, Moore's ex-husband.