This isn't an easy time for Dan Loeb. (The billionaire hedge funder was forced to start renting his Gulfstream jet by the hour recently.) But hopefully he'll get a chance to enjoy the big day: He turns 47 today. Others celebrating: Katie Holmes is turning 30. Brad Pitt is 45. Steven Spielberg is 62. Christina Aguilera is turning 28. PR guru/filmmaker Dan Klores is 59. Randi Weingarten is 51. Memorial Sloan-Kettering chief (and Nobel Prize winner) Harold Varmus is turning 69. Keith Richards is turning 65. Model agency owner Faith Kates is turning 51. Ray Liotta is 54. Former Miss USA Tara Conner is 23. And troublemaking rapper DMX is turning 38.

Hardball host (and potential political candidate) Chris Matthews is turning 63 today. Model/designer Milla Jovovich is turning 33. Peter Briger, the beleaguered president of Fortress Investment Group, is 45. Actor Eugene Levy turns 62. Giovanni Ribisi is 34. R.E.M. bassist Mike Mills is 50. And Penthouse founder Bob Guccione is turning 78.

Judi Giuliani is turning 54 today. We're guessing a very expensive gift will be headed her way later today courtesy of the former mayor. Also celebrating: 60 Minutes correspondent Lesley Stahl is 67. Benjamin Bratt is turning 45. TV writer/producer Steven Bochco is 65. Record producer Scott Storch is 35. And Michael Lohan Jr., the brother of Lindsay and son of Michael and Dina, is turning 21.

Why won't ShopRite make Adolf Hitler a birthday cake? [LHL]

Tony-winning director Julie Taymor is 56 today. Actor Stuart Townsend (otherwise known as Mr. Charlize Theron) is 36. Adam Brody, who starred in The OC, is 29. Virginia's former governor and now Senator-elect, Mark Warner, is turning 54. And Don Johnson is 59 today.

It's the former New York City mayor's 84th bday today! So here he is, warbling away in an animated short that won an Oscar in 1983.

Ed Koch is turning 84 today. Happy birthday, Mr. Mayor! Jennifer Connelly is 38. Actor Tom Wilkinson is turning 60. Hollywood powerhouse Paula Wagner is turning 62. Fox Business anchor Liz Claman is 45. Rory Kennedy, the youngest daughter of Bobby Kennedy, is 40. Model Bridget Hall is turning 31. Dionne Warwick is 68. Mayim Bialik (yes, Blossom) is 33. And your favorite game show host ever, Bob Barker, is celebrating his 85th. Weekend birthdays below!

Today is Emily Brill's birthday! Take a moment, if you would, to reflect back on what the young media heiress has accomplished in this past year: inspired by a mean Gawker post, she founded her very own blog, triumphed over disease, traveled to distant lands, posed provocatively, wore her pearl necklace, stood resolutely with Sarah Palin, and finally became the Ultimate Narrator. Quite a time. She's celebrating today by going to FAO Schwarz to "pick out two animals," then maybe going to a blowjob party. Click through for one more fun picture of Emily in devilish party mode. We salute you, Ms. Brill:

Remember John Kerry? Apparently he ran for president in 2004 or something. Anyway, he's celebrating his 65th today. Mos Def is turning 35. Faded '80s actresses Teri Garr and Donna Mills are 64 and 66, respectively. British chef Marco Pierre White is 47. Motley Crew bassist Nikki Sixx is turning 50. And Jermaine Jackson is 54.

Yes, it's Rod Blagojevich's birthday! The disgraced Illinois governor is turning 52, although we can't imagine much celebrating will be going on today. The White Stripes' Meg White is 34. Whitney Museum director Adam Weinberg is 54. Verizon's chief executive, Ivan Seidenberg, is turning 62. Summer Phoenix, the sister of Joaquin and the late River Phoenix, is 30. Kenneth Branagh is 48. Actress Emmanuelle Chriqui is 31. And child star Raven-Symone turns 23 today.

Wendi Deng's 40th birthday party took place last night at the Gramercy Park Hotel. Pianist Lang Lang performed, and Nicole Kidman, Keith Urban, Billy Joel, Barry Diller and Diane von Furstenberg supposedly made appearances. One person who wasn't there: Rupert's 99-year-old mother, Dame Elisabeth Murdoch, who doesn't appear to be the biggest fan of her daughter-in-law. In an interview with The Age over the weekend, she described her reaction to the news that her son was planning to split up with his second wife:

Desperate Housewives star Felicity Huffman is turning 46 today. Her former castmate, Jesse Metcalfe, is celebrating his 30th. Comedian Mario Cantone is 49. Violinist Joshua Bell is 41. John Malkovich is turning 55. Dame Judi Dench is 74. It's Tom Daschle's 61st birthday. Nightline co-anchor Terry Moran is turning 49. Architect Steven Holl is 61. Singer Imogen Heap is turning 31. Donny Osmond is 51. American Idol judge Kara DioGuardi is turning 38. And Kirk Douglas turns 92 today.

Today is Ann Coulter's 47th birthday. Sadly, since it was only a couple of weeks ago that her jaw was wired shut after an accident, it's unclear if Coulter will get to blow out any candles or eat any birthday cake today. Others celebrating: Teri Hatcher is 44. Sinead O'Connor is turning 42. Lost's Dominic Monaghan is 32. Nick Zinner of the Yeah Yeah Yeahs is 34. The Allman Brothers' Gregg Allman turning 61. Mike Mussina is 40. David Carradine is 72. Jackass co-creator Jeff Tremaine is turning 42. And Kim Basinger is turning 55, although she probably won't be getting any warm birthday wishes from Alec Baldwin.

It's Amanda Lepore's birthday today! At least we think it's her birthday and we think she's 41, but she's been known to fool people before. Others celebrating today: Margaret Cho is 40. The New Yorker's Calvin Trillin is 73. Novelist Joan Didion is turning 74. Little Richard is 76. Knicks center Eddy Curry is 26. Child star Frankie Muniz turns 23. Actor Nick Stahl is turning 29. And model Shalom Harlow is 35. Weekend birthdays after the jump.

Both are ubiquitous on the social scene, both have hot husbands, and, as of today, both are 365 days away from turning 40. Author/socialite Plum Sykes and her twin, designer/socialite Lucy Sykes, turn 39 today. Jay-Z is also celebrating his 39th birthday. Ms. Tyra Banks is turning 35. Marisa Tomei is celebrating her 44th. Saturday Night Live's Fred Armisen is 42. And actor Jeff Bridges is 59.

The eternally youthful Village Voice gossip columnist Michael Musto turns 53 today. Happy birthday, Michael. Julianne Moore is celebrating, too: She's 48. Actor Brendan Fraser is turning 40. Daryl Hannah is turning 48. Legendary French filmmaker Jean-Luc Godard is 78. Last but not least, the Prince of Darkness, Ozzy Osbourne, is 60 today.

Erin Callan has had a tumultuous year, hasn't she? The former star at Lehman Bros can sit back and relax today. Not only has she landed on her feet (unlike so many of her former colleagues), it's also her 43rd birthday. Others celebrating: Stone Phillips is 54. Senate Majority Leader Harry Reid is turning 69. Real estate marketing queen Louise Sunshine is 68. Nelly Furtado is 30. Nate Mendel of the Foo Fighters is 40. Monica Seles is turning 35. Lucy Liu is 40. And Ms. Britney Spears—you've heard of her, haven't you?—is celebrating her 27th birthday today.

We may not find out how Carrie Bradshaw celebrates her 50th until the sixth Sex and the City movie debuts in a decade or so, but the character's creator, Candace Bushnell, will experience the milestone for herself today. It's a big day for Woody Allen, too. He's 73. Bette Midler is turning 63. Sarah Silverman is 38. John Densmore, the drummer from The Doors, is 64. Actor Treat Williams is 57. Fox News correspondent Rick Leventhal is 49. Brit actress Emily Mortimer turns 37. And former supermodel Carol Alt celebrates her 48th today.

Tina Turner turns 69 today, can you believe it? Natasha Bedingfield is celebrating her 27th birthday. Artist Kara Walker is 39. Financier (and former billionaire) Michael Novogratz is 44. Cartoonist Roz Chast is 54. Actress Garcelle Beauvais is 42. Actor Peter Facinelli is 35. And Cicciolina, the former Italian porn star and ex-wife of Jeff Koons, is 57 today.

Barbara and Jenna Bush are celebrating their last birthdays as First Daughters: The twins turn 27 today. Christina Applegate is 37. Actor John Larroquette is 61. Pop/gospel singer Amy Grant is 48. Fantasy Island's Ricardo Montalban is 88. Actor/pundit Ben Stein is 64. New York Times columnist Gail Collins is turning 63. Famed choreographer Tricia Brown is 72. And hot dog eating champ Joey Chestnut is 25 today.