Who is Justin Theroux?

In the tabloids right now he is known mainly as Jennifer Aniston's new man but he has had career in the entertainment industry for years. Born in Washington D.C. in 1971 it is said that he received his Bachelors of Arts at Bennington College then moved to New York where he wanted to work as a visual artist but ended up in doing theater on Broadway.
  His first appearance on a screen was as a guest star in a short lived show called C.P.W or Central Park West, about New Yorkers trying to get their film of sex and money. From here he did a lot a few more bit parts in film and television in the 90s such as hit Ally McBeal (a show about the wacky antics that happen at a law firm), Sex and the City, I Shot Andy Warhol, Romy and Michele's High School Reunion (he is the cowboy if you have seen the film) and Spin City.
In 2000 he starred opposite Christian Bale in the cult classic American Psycho as Timothy Bryce.

  Then he continued with a turn in the film Mulholland Dr., over a season on the television show The District and his most scene character around the world of Seamus O'Grady in Charlies Angels Full Throttle. Even with the huge exposure of Charlie's Angels it seems that he wasn't searching for the big spotlight that so many seek didn't get the big roles. From 2003 to 2007 he appears on two episode of Alias, a storyline of HBO's Six Feet Under (he shared in that season's SAG Best TV Ensemble nomination) and mostly a bunch of independent, low budget or straight to video films; The Baxter, Happy End, The Legend of Lucy Keyes, Return to Rajapur, Inland Empire, Broken English and The Ten. He did also squeeze in a role in the film adaptation of Miami Vice along side Colin Farrell and Jamie Fox.

  But in 2007 it seems that he decided that he wanted to work on other aspects of the film industry behind the camera that also got him noticed. He executive produced and directed a film called Dedication which starred Mandy Moore and Billy Crudup, he created the story and was part of the writing team for Tropic Thunder along with exec produced, wrote Iron Man 2, was a creative consultant on Mastermind in which he also lent his voice, and wrote the screenplay for Rock of Ages which is now filming. 
Along with his behind the camera endeavours he also portrayed the role of John Hancock in the HBO award winning mini-series John Adams, picked up a guest role on Parks and Recreations and was the antagonist in this year's stoner adventure film Your Highness.
  So even though now he will be linked with Jennifer Aniston for a while (expecially because they are both in the film Wanderlust which comes out in October) don't forget that he isn't just her arm candy. Well let's be honest he is some hot eye candy.