Iranian president Mahmoud Ahmadinejad turns 53 today. The richest man on the planet, Microsoft co-founder Bill Gates, is turning 54. Julia Roberts celebrates her 42nd birthday today. Conan sidekick Andy Richter is turning 43. Joaquin Phoenix is 35. Bruce Jenner, the former athlete and current stepdad to the Kardashian clan, is turning 60. The CEO of Pepsi, Indra Nooyi, is turning 54. Singer/songwriter Ben Harper is 40. Actress Lauren Holly is 46. Actor Dennis Franz is turning 65. And former Miss Universe Dayanara Torres turns 35 today.