Here's a look at some notable birthdays being celebrated today:

Cal Ripken, Jr.
Age: 51
Occupation: Retired Professional Baseball Player
Known For: Holding the record for most consecutive games played and being widely considered one of the best shortstops and third basemen ever

Rupert Grint
Age: 23
Occupation: Actor
Known For: Playing ginger-haired Ron Weasley in the 'Harry Potter' film franchise

Craig Kilborn
Age: 49
Occupation: Actor and Talk Show Host
Known For: Being the original host of 'The Daily Show,' a former anchor on ESPN's 'SportsCenter,' and Tom Snyder's successor on CBS' 'The Late Late Show'

Marlee Matlin
Age: 46
Occupation: Actress
Known For: Winning an Oscar for 'Children of a Lesser God,' roles on TV shows such as 'The West Wing,' and performing on 'Dancing with the Stars' despite being almost completely deaf

Dave Chappelle
Age: 38
Occupation: Actor, Comedian, and Screenwriter
Known For: Rocketing to fame with his sketch-comedy program, 'Chappelle's Show,' which he imploded less than three years later, claiming it was ruining his life