Happy Birthday To Michelle Rodriguez, Topher Grace, Richard Simmons & Who?

 Michelle Rodriguez - 42

Letty in the "Fast & Furious" movies, Rain Ocampo in the "Resident Evil" movies, Trudy in "Avatar", and Ana-Lucia on "Lost".

Topher Grace - 42

Eric on "That '70s Show" AND Venom in "Spider-Man 3".

Brock Lesnar - 43

WWE superstar.

Cheryl Ladd - 69

Kris Munroe on "Charlie's Angels".

Richard Simmons - 72

 Fitness guru.

Bill Cosby - 83

Photos: Getty Images