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

George Hamilton
Age: 73
Occupation: Actor
Known For: Being the eterna-tanned star of films such as 'Love at First Bite,' 'Zorro, the Gay Blade' and 'The Godfather, Part III' and TV shows like 'Dynasty' and 'George and Alana,' and currently starring in the national tour of the Tony-winning stage show 'La Cage aux Folles'

Peter Krause
Age: 47
Occupation: Actor
Known For: Playing Casey McCall on 'Sports Night,' Nate Fisher on 'Six Feet Under,' Nick George on 'Dirty Sexy Money' and Adam Braverman on 'Parenthood,' and his relationship with his 'Parenthood' co-star Lauren Graham

Mark Knopfler
Age: 63
Occupation: Singer, Songwriter, Musician and Producer
Known For: Co-founding and fronting the British rock band Dire Straits on songs like 'Sultans of Swing,' 'Money for Nothing' and 'So Far Away,' producing albums for artists including Tina Turner, Bob Dylan and Randy Newman, and being ranked 27th on Rolling Stone magazine's list of the 100 Greatest Guitarists of All Time

Sir Mix-a-Lot
Age: 49
Occupation: Rapper, Emcee and Producer
Known For: Paying homage to female posteriors the world over with his Grammy-winning sing-along anthem 'Baby Got Back,' and starring as the title character in the short-lived TV series 'The Watcher'

Casey Affleck
Age: 37
Occupation: Actor and Director
Known For: His Oscar-nominated work in 'The Assassination of Jesse James by the Coward Robert Ford,' roles in other films including 'Gone Baby Gone,' 'Good Will Hunting,' 'Ocean's Eleven' and 'Chasing Amy,' directing Joaquin Phoenix's weird mockumentary 'I'm Still Here,' and being Ben Affleck's little brother

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