After her lil' detour at an electronics store, Lindsay Lohan checked into rehab. Two minutes later, she checked out and derped away quickly, chanting: "I'm not going to rehab. I'm not going to rehab. Take me back to the airport."

Hugh Jackman revealed to Katie Couric that he and his wife Deborra-Lee Furness went through some grueling emotional trials before adopting their son Oscar, 12, and daughter Ava, 7.

• Simon Cowell confirmed today that he's leaving American Idol at the end of this season. He'll be launching the U.S. version of The X Factor and sources say he's convinced a familiar face to join him on the judges' panel.

• MTV's breakout hit Jersey Shore will be back for another summer. Vinny spilled to a reporter:

• Jay Leno went after David Letterman last night, dropping a few Letterman jokes in his opening monologue. "If you came here tonight for sex with a talk show host," he told his audience, "you've got the wrong studio." [USWeekly]

• "Sources" say Sarah Jessica Parker and Matthew Broderick have decided to live apart just weeks after the birth of their twin daughters. Matthew will stay in their Manhattan apartment and Sarah Jessica will move to Brooklyn with the kids.

• Cameron Diaz was out with Jude Law on Sunday night in London, but last week she was out in London with Leonardo DiCaprio. This paper calls it an "A-list love triangle."

The teaser poster for the horror comedy All About Evil has been released, and it's slightly reminiscent of another photo of the film's star, Natasha Lyonne. The film also features Cassandra Peterson—aka Elvira—sans makeup and cleavage.

• Alex Young, the husband of Private Practice star Kate Walsh, has filed for divorce from the actress. They've been married fourteen months, and got engaged after a five-month courtship in early 2007. [ETonline]

[New York, September 9. Image via Splash.]