Plus T.I., Kara DioGuardi, and more celebrities making news the week of September 10, 2010

By Brad Wete
Updated September 10, 2010 at 04:00 AM EDT

T.I. (né Clifford Harris Jr.), 29, and his wife, Tameka Cottle, 36, were arrested in L.A. on Sept. 1 following a traffic stop. After a search allegedly turned up Ecstasy, they were booked for possession of a controlled substance. The two, who were married July 30, each posted $10,000 bail and were released Sept. 2. The bust could have huge implications for the rapper, who is still on probation following a 2008 conviction on federal weapons charges. (He served seven months in prison and was released last December.) Will he go back to jail for violating probation? A rep for the U.S. attorney’s office in Atlanta says a decision will be made ”when [we] have all the facts.”

American Idol finally confirmed Sept. 3 that polarizing ”fourth judge” Kara DioGuardi, 39, is leaving the show. Sources tell EW that Idol is still working to lock down returning judge Randy Jackson, plus newcomers Jennifer Lopez and Steven Tyler, for the upcoming season…. Joe McGinniss, 67 — the author who made news in May when he moved next door to Sarah Palin in Wasilla, Alaska — has moved back to Massachusetts to begin writing a biography on the former vice presidential candidate. — With additional reporting by Jennifer Boeth and Tanner Stransky

It’s Always Sunny in Philadelphia costars Kaitlin Olson, 35, and Rob McElhenney, 33, welcomed their first baby, Axel Lee, on Sept. 1 in Sherman Oaks, Calif.

Comedian Robert Schimmel — known for his appearances on Howard Stern’s radio show — died Sept. 3 in Phoenix after suffering injuries in a car crash. He was 60.

Colin Firth, 50
Ryan Phillippe, 36
Sept. 10

Amy Winehouse, 27
Sept. 14

Amy Poehler, 39
Mickey Rourke, 58
Sept. 16

Jerry Bruckheimer, 65
Stephen King, 63
Bill Murray, 60
Sept. 21

John Travolta: Moving On From Extortion Deal
With his wife, Kelly Preston, due to give birth to a baby boy this fall, John Travolta, 56, is looking forward to the future — not back at the exhausting legal battle stemming from the sudden death of their son, Jett, in January 2009. After the actor declined to give additional testimony, charges were dropped against two people in the Bahamas accused of attempting to extort $25 million from the Pulp Fiction star. (Ambulance driver Tarino Lightbourne and his attorney, Pleasant Bridgewater, allegedly demanded cash in exchange for not releasing a document relating to the 16-year-old’s treatment following a fatal seizure at the family’s vacation home; they have both denied the charges.) A previous trial in the Bahamas — which included emotional testimony from Travolta — ended in a mistrial last October, and the actor said another round of litigation was simply not in the best interests of his wife, 47, and daughter, Ella Bleu, 10. ”The long-pending status of this matter continued to take a heavy emotional toll on my family,” Travolta said in a statement. ”It was finally time to put this matter behind us.” — Keith Staskiewicz