Cityfile: New York's Most Notable and Influential

• Kimora Lee Simmons and Djimon Hounsou had a baby boy over the weekend. [Us]
• Susan Boyle checked into a clinic on Saturday after suffering a "mental breakdown" following her loss on Britain's Got Talent. [NYDN, NYP]
• Kate Hudson successfully avoided Madonna at Saturday's polo match, which is a good thing since an encounter could have led to a "girl-on-girl showdown." [NYDN]
• Bill and Hillary are househunting, apparently. Per a friend: "There are some really massive estates that are incredibly cheap. Plus, it's a fun way to spend a weekend." [NYDN]
• As for Barack and Michelle, they spent Saturday in NYC, eating at Blue Hill before attending a performance of Joe Turner's Come and Gone. [NYDN, NYT]
• Eminem stormed out of the MTV Movie Awards after Sasha Baron Cohen landed in his lap, either because he was offended or because it was part of a pre-planned stunt. [P6, NYDN]
• Billy Bob Thornton's daughter has been arrested for child neglect. [People]
• Rumor has it Jennifer Hudson is pregnant. [People]

• Madonna's most recent effort to change hearts and minds in Malawi: She pleaded her case in a letter to the country's Nation newspaper, writing that she wants to provide Mercy "with a home, a loving family environment and the best education and health care possible." [Us, NYP]
• Madonna may want to take a cue from Angelina Jolie and Brad Pitt: The couple had their adoption request turned down by Bhutan recently, but they're now moving on to the Philippines, according to Britain's Daily Mail. [NYDN]
• Kipton Cronkite's life appears to be headed downhill: The art world scenester has lost his job and apartment, and he's living rent-free with a rich teenager on the Lower East Side. [P6]
• Ruth Madoff will have to find a new stylist: She's been banned from the Pierre Michel Salon "out of respect for the salon's other customers." [P6]
• Lindsay Lohan's mental condition isn't improving: Friends now say she "barely sleeps" anymore, and she "can't even sit down for a minute without pacing around the room." [People]More

• Is Billy Joel planning to split up with Katie Lee? That's what the Enquirer is claiming this week, suggesting that Katie's "cozy relationship" with "hunky designer" Yigal Azrouel has caused Billy to consider dumping her. But not until his tour ends in November, which doesn't make much sense. [National Enquirer]
• A New Jersey man says Bruce Springsteen caused the breakup of his marriage. In divorce papers, he alleges Bruce and his estranged wife have been having an affair since the two met up at a local gym more than a year ago. [Star]
• Michael Phelps "skeeved out onlookers" at Marquee on Tuesday by drinking straight from a bottle of vodka and "dancing like a loon," all while making out with his cocktail waitress girlfriend. [NYDN]
• Breaking! Brad Pitt took sons Maddox and Pax to a Dunkin Donuts in Oyster Bay yesterday morning just like a "regular guy." [Star] More

Spotted | Matthew Broderick holding hands with Sarah Jessica Parker while walking in Midtown and later riding on a scooter with little James ... Maggie Gyllenhaal crossing the street ... Calvin Klein eating outside with a friend ... Carla Bruni carrying a Post under her arm ... Marcia Gay Harden and her daughter crossing the street with smoothies in hand... Katie Holmes leaving her building solo ... Sarah Palin arriving at the Colombian Embassy on the Upper East Side ... Diane Lane posing with an autograph-seeker outside her hotel ... Julianne Moore hopping into a SUV outside her West Village townhouse ... Matt Dillon stepping off the sidewalk ... Billy Bob Thornton outside NBC before taping Conan O'Brien's show ... and John Mayer all dressed up en route to a benefit.

Spottings | Benji Madden shopping on the Lower East Side ... Brooke Shields filming a scene for Lipstick Jungle at Chelsea Piers ...  Suri Cruise going shoe shopping with mom Katie Holmes ... Ben Stiller filming a scene outside the Natural History Museum ... Penn Badgley taking a break from filming Gossip Girl on the Columbia campus ... Rumer Willis showing up to a screening of House Bunny at the Hearst building ... Billy Bob Thornton performing at the Highline Ballroom ... and Michelle Williams and Spike Jonze leaving a Brooklyn bar together.

Happy Birthday | Barack Obama turns 47 today! He'll celebrate with fundraising events in Michigan and Boston, although he's probably much more excited about the prospect of planning a party in the West Wing next year. Also celebrating: Robert A.F. Thurman, Columbia professor, former Buddhist monk, and father of Uma, is turning 67. New York's top judge, Judith Kaye, is 70. Scandal-plagued pitcher Roger Clemens is 46. Denim designer Scott Morrison turns 36. NASCAR driver Jeff Gordon is 37. Law & Order actor Richard Belzer turns 64. Model/actor Marcus Schenkenberg is 40. And Billy Bob Thornton is turning 53.