Sacha Noam Baron Cohen (born 13 October 1971) is an English stand-up comedian, actor, writer, and voice artist. He is most widely known for writing and playing three unorthodox fictional characters Ali G, Borat, and Brüno. In his routines, Baron Cohen's characters interact with unsuspecting people who do not realise they are being set up for comic situations and self-revealing ridicule.

Baron Cohen's work has been recognised with several Emmy nominations, an Oscar nomination for Best Adapted Screenplay, a BAFTA award, and a Golden Globe for Best Actor for his work in the feature film Borat: Cultural Learnings of America for Make Benefit Glorious Nation of Kazakhstan. After the release of the movie Borat, Baron Cohen stated that because the public had become too familiar with the characters, he would retire Borat and Ali G. Similarly, after the release of Brüno, he has stated he would also retire the title character.

http://en.wikipedia.org/wiki/Sacha_Baron_Cohen