Katie Couric turns 53 today. Nic Cage is turning 46. Rolling Stone founder Jann Wenner is 64. CSI: Miami star David Caruso is turning 54. Professional golfer (and former Celebrity Apprentice contestant) Natalie Gulbis is 27. Singer Kenny Loggins is turning 62. And Dustin Diamond, the man who so memorably played Screech on the TV show Saved by the Bell, celebrates his 33rd birthday today.