It's a big birthday for Bruce Springsteen. The rock legend turns 60 today. Also celebrating: Jermaine Dupri is turning 37. Singer Julio Iglesias turns 66. Mickey Rooney is 89. Playwright George C. Wolfe is turning 55. Jason Alexander of Seinfeld fame is 50. Hedge fund manager Marc Lasry is turning 50, too. Ani DiFranco turns 39. Writer Joshua Foer is turning 27. Writer/blogger Ana Marie Cox is 37. And Yankees pitcher Joba Chamberlain turns 24 today.