Oprah Winfrey turns 56 today. Heather Graham is turning 40. Singer Adam Lambert is 28. Tom Selleck is turning 65. Actor/director Ed Burns is turning 42. Olympic diver Greg Louganis is 50. Actor Nicholas Turturro is 48. Tommy Ramone, the last surviving member of the Ramones, is 58. Actress Sara Gilbert of Roseanne fame is 35. Heart surgeon David Adams is 53. Heiress Athina Onassis Roussel is turning 25. And the "Spanish Oprah," Cristina Saralegui, turns 62 today. A few people celebrating birthdays this weekend are below.

Oprah Winfrey is turning 55 today. Writer/director Ed Burns is turning 41. Heather Graham is 39. Athina Roussel—the daughter of Christina Onassis and only living heir of Aristotle—is 24. Top cardiothoracic surgeon David Adams is 52. Tommy Ramone is 57. Actor Nicholas Turturro turns 47. Actress Sara Gilbert is turning 34. And Tom Selleck celebrates his 64th birthday today.