(1978- ) Christopher Ashton Kutcher is an American actor, producer and model famous for his role as Michael Kelso in the sitcom That '70s Show. He is also the creator, producer and host of Punk'd (among others) and has starred several films as Dude, Where's My Car?, Just Married, The Butterfly Effect, The Guardian, and What Happens in Vegas. In 2011 Kutcher replaced Charlie Sheen in the sitcom Two and a Half Men. He also produced and co-created the TV show Room 401 and the reality TV show Beauty and the Geek as he runs with his partner Jason Goldberg the production company Katalyst Films. He has also invested in a couple of restaurants in USA.

In 1998, Kutcher signed with the modelling agency Next (New York) and he did some ads for Calvin Klein, a commercial for Pizza Hut and he also modelled in Paris and Milan. In 2011 he participated in an advertising campaign for the Brazilian fashion label Colcci and he's currently advertising Nikon cameras.

He started dating the actress Demi Moore in 2003 and they got married two years later.