Exclusively on 'Extra:' Britney Spears Entered Rehab  —  "Extra" has learned that pop star Britney Spears is entering a rehab facility.  —  Spears was last seen leaving New York City four nights ago on a private jet with her two young sons heading to Miami.  —  Then, she disappeared off the paparazzi radar.

Anna Nicole's Will  —  TMZ has obtained the will of Anna Nicole Smith, aka Vickie Lynn Marshall.  The will is dated July 30, 2001 and was drafted prior to Dannielynn's birth and Daniel's death, and therefore indicates that Anna only had a son.  —  The will entrusts all of Anna's property and names Howard K. Stern as executor.

Nicole Richie Charged with DUI  —  Nicole Richie has been charged with misdemeanor driving under the influence.  The DA says Richie is charged with being under the influence of "an alcoholic beverage and a drug."  Richie was arrested on December 11 on suspicion of driving under the influence …

Cameron Diaz & Djimon Hounsou Get Cozy in L.A.  —  Cameron Diaz was spotted getting cozy with Blood Diamond Oscar nominee Djimon Hounsou at L.A.'s Hyde Lounge on Thursday.  —  "It looked like the perfect post-Valentine's Day date," a patron tells PEOPLE of the pair, who were with several other friends.

Tonight's the night Daniel dares to bare  —  This is the view theatregoers will get tonight of Harry Potter star Daniel Radcliffe.  And the question some are asking is: will he end up wishing he had brought along Harry's cloak of invisibility?  —  More here...

Eminem fires back: 'I've moved on and Kim hasn't'  —  Ex-wife Kim Mathers attacks Eminem in explosive radio interview  —  In an explosive interview with WKQI-FM's (95.5) "Mojo in the Morning" show today, Eminem's ex-wife Kim Mathers flipped the tables on Em and cleaned out her closet live on the air for all to hear.

Hugh Grant, Jemima Khan Split Up  —  Hugh Grant and girlfriend Jemima Khan have ended their relationship, Grant's publicist, Robert Garlock, confirms to PEOPLE exclusively.  —  "Hugh and Jemima have decided to split amicably," says Garlock.  —  Grant, 46, whose relationship …

Keith Urban Calls Nicole's Support 'Extraordinary'  —  Keith Urban says words can't describe the lessons he and wife Nicole Kidman have learned from his recent stint in rehab.  —  "I can't really quantify it, because it's not a soundbite what we've learned," the singer, 39, said on Friday's Today show.

Skating's Kristy Swanson & Lloyd Eisler Have a Boy  —  Skating with Celebrities champions Kristy Swanson and Lloyd Eisler welcomed a son on Friday, their publicist Cheryl J. Kagan tells PEOPLE.  —  Magnus Hart Swanson Eisler was born at 1:36 p.m. in Los Angeles and weighed 7 lbs., 11 oz.

JLo Gets Booed  —  Jennifer Lopez's film "Bordertown" had a little screening at the Berlin Film Festival.  The film played and JLo waited to see the audience's reaction.  —  And she waited....  And they started booing....  And she cried...AHAHAHA!  That's right.

Is Lindsay Lohan Having Threesomes?  —  This is about as unsubstantiated as it gets, and is really pure speculation, but after reading a "blind item" from the New York Daily News, one easily comes to the conclusiong that Lindsay Lohan is having threesome sex, with two male partners.

Bryce Dallas Howard Has a Boy  —  Bryce Dallas Howard and her actor-husband, Seth Gabel, have welcomed a boy, the star's rep confirms to PEOPLE.  —  No details about the baby's name or weight have been released.  —  Howard, 25, announced she was expecting in August at the British premiere of her movie, Lady in the Water.