Tom Ellis (born 17 November 1978) is a Welsh actor. He is known for playing Dr. Oliver Cousins in the BBC Television soap opera "EastEnders" and Detective Sergeant Sam Speed in a "Life on Mars" parody on "The Catherine Tate Show". He starred as Sam in the BBC comedy "Pulling" and he played Gary in the BBC2/BBC1 comedy "Miranda". He is best known in the United States for two American TV shows in which he played the title character, "Rush" and "Lucifer".