Cityfile: New York's Most Notable and Influential

Happy Birthday | Your favorite art-collecting, Greenwich-living, publicity-shunning hedge fund billionaire, Steve Cohen (left), turns 53 today. New York's  most famous drag queen, Lady Bunny (right), is turning 47. Marcia Gay Harden is 50. Photographer Terry Richardson is turning 44. Halle Berry turns 43. Steve Martin is 64. Oscar-winning composer James Horner is turning 56. Tony-winning playwright Thomas Meehan turns 80. Magic Johnson is 50. Actress Mila Kunis is 26. Susan Saint James, the actress and wife of NBC Sports chairman Dick Ebersol, is turning 63. Musician David Crosby is 68. E! host and Top Model regular Jay Manuel is turning 37. And romance novelist Danielle Steel is celebrating her 62nd birthday today. Weekend birthdays are below.More

The Society of Memorial Sloan-Kettering Cancer Center hosted its second annual Spring Ball at the Plaza on Tuesday night. More than 350 people turned out for the NBC Universal-sponsored event, including NBC Universal president Jeff Zucker and his wife Caryn (left), Mort Zuckerman, Robert De Niro and Grace Hightower, Julia and David Koch, Tory Burch and Lyor Cohen, Hilary Geary and Wilbur Ross, Jonathan and Somers White Farkas, Shoshanna Lonstein Gruss, Peter and Jamee Gregory, Ginny and Tiki Barber, Sherman and Chris Meloni, Frank and Kathie Lee Gifford, Hoda Kotb, Peggy Siegal, Natalie Morales, Valesca Guerrand Hermes, Jennifer Creel, Renee Rockefeller, Alexandra Lebenthal and Jay Diamond, Danielle Ganek, Kimberly Kravis, Muffie Potter Aston, Hilary Gumbel, Dr. Harold Varmus, Dennis Basso, Heather Mnuchin, Anne Grauso, Sylvester and Gillian Miniter, Gigi Mortimer, Sara Ayres, Shafi Roepers, Leslie Jones, and LL Cool J. [PMc, Wireimage, NYSD]More

Adrian Grenier and Jessica Stam hosted Scott Harrison's third annual Charity: Water benefit last night at the Metropolitan Pavillion. Attendees at the event included Richie Rich, Olivia Palermo, Whitney Port, Byrdie Bell, Andrew Saffir and Daniel Benedict, Rocco DiSpirito, Jenna Elfman, Emma Snowdon-Jones, Jamison Ernest, Cee-Lo, and models Larissa Bond and Masha Rudenko. [PMc, Wireimage, GoaG] More

♦ People got Alex Rodriguez to open up about his relationship with Madonna. Or, you know, maybe not. The slugger claims that they're just "friends—that's it." He also says he's never been on a plane with her, despite the countless photos that clearly indicate otherwise. [People]
♦ Have Tea Leoni and David Duchovny reunited? Star reports they were spotted holding hands at a Tasti D-Lite on the Upper East Side and they've picked up a $7.5 million apartment in the East 70s. [Star]
♦ It looks like Harvey Weinstein and Scott Rudin may have buried the hatchet after Harvey publicly thanked Scott at the premiere of The Reader on Wednesday night. [P6] 
♦ A London jury has found Boy George guilty of false imprisonment for having handcuffed a Norwegian male escort to a wall. [People]More

♦  Charges will not be filed against Shia LaBeouf in connection with his car accident in LA in July. He may still lose his license, though, for failing to submit to a blood-alcohol test after the crash. [E!]
♦  Lindsay Lohan is so scared of her dad that she may take out an order of protection against him. [P6]
♦  Last week it was rumored Leonardo DiCaprio and Bar Refaeli had split up. Now it's rumored they're back together. [OK!] 
♦  Robert De Niro is a giant pain to work with who makes "weird midnight phone calls." Or at least that's what Harvey Weinstein and Quentin Tarantino said in a taped phone conversation from 1997 that's just now been leaked. [P6]
♦  Julia Roberts left the Waverly Inn covered up in a pashmina, which means it's time for a fresh round of rumors that she's secretly pregnant. [The Sun]More

• According to Nielsen, John McCain's acceptance speech at the RNC was watched by more people than Obama's speech last week. [TVWeek]
• Jeffrey Toobin on John McCain's speech last night: "The worst speech by a nominee that I've heard since Jimmy Carter in 1980." [HuffPo]
• Us Weekly's decision to take on Sarah Palin seems to have upset some subscribers. [MSNBC]
• Alessandra Stanley offers up her take on the O'Reilly-Obama match-up last night. [NYT]
• More trouble for magazine mogul David Pecker. [NYP]
• Jack Kliger will not be the chairman of Hachette after all. [Portfolio]
• One headline we never expected to see concerning Kathie Lee Gifford: "The Craziest (and Sexiest) Woman on TV." [Style.com]

• A visiting Kim Kardashian was rushed to New York-Presbyterian late last night after she cut her foot on a glass coffee table at her hotel. [TMZ]
• A cop in LA pulled his gun on Diddy during a traffic stop this weekend. [NYDN]
• Marc Jacobs says he is a "perfect being" now that he has a buff bod. He also says he has 28 tattoos now and spends hours in the bathroom shampooing his hair and putting on moisturizer. [R&M]
• Paris Hilton is now hawking a line of polyester hair extensions. [NYDN]

Happy Birthday | Top Chef's Tom Colicchio turns 46 today. Also celebrating: Marquee co-owner Noah Tepperberg is turning 33. Dealmaker (and Bill Clinton golf partner) Vernon Jordan is 73. Artist Andres Serrano is 58. Ben Affleck is 36. Times style editor Trip Gabriel is 53. And producer Linda Ellerbee is 64. Saturday is the big day for Madonna: The material girl will officially be 50. She shares her birthday with Kathie Lee Gifford, who is turning 55, and Steve Carell, who's turning 45. On Sunday, Robert De Niro will be 65, the same day Jorge Posada will be 37, Jonathan Franzen celebrates his 49th, and Sean Penn turns 48.

• Julia Stiles and her boyfriend of two years, Jonathan Cramer, have split up, which may explain why she was so rude to a group of diners at a cafe the other day. [Page Six]
• Rumor has it that Alex Rodriguez has agreed to donate $500,000 to Madonna's Malawi charity. [R&M]
• Kate Moss is hinting to friends that she may get married to boyfriend Jamie Hince in Ireland by the end of the year. [Mirror]
• Julianne Moore was rejected when she tried to board the Jitney on Thursday morning, even though she'd already reserved a seat. [Page Six]
• Not everyone thinks the way Kathie Lee Gifford talks over guests on the Today show is cute: There are now three anti-Gifford groups on Facebook. [NYT]