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

Sean Hayes
Age: 41
Occupation: Actor
Known For: His laugh-out-loud funny role as the flamboyantly gay Jack McFarland on the sitcom 'Will & Grace'

Derek Jeter
Age: 37
Occupation: Professional Baseball Player
Known For: His prowess as a standout shortstop and power-hitter for the New York Yankees, and his reputation as a playboy (dating stars such as Mariah Carey, Jessica Biel and Minka Kelly)

Chris Isaak
Age: 55
Occupation: Singer and Songwriter
Known For: The super-sexy songs 'Wicked Game' and 'Baby Did a Bad, Bad Thing,' and the even sexier Herb Ritts-directed videos for both

Patty Smyth
Age: 54
Occupation: Singer
Known For: Songs such as 'Goodbye to You' with Scandal and 'Sometimes Love Just Ain't Enough' with Don Henley, and having a temper that goes toe-to-toe with husband John McEnroe

Greg LeMond
Age: 50
Occupation: Cyclist
Known For: Being the first American winner of the Tour de France, and one of only nine cyclists to have won the race at least three times

Chris O'Donnell
Age: 41
Occupation: Actor
Known For: Playing Robin in two 'Batman' films and his current role on the TV show 'NCIS: Los Angeles'

Gretchen Wilson
Age: 38
Occupation: Singer and Songwriter
Known For: Her country hits 'Redneck Woman' and 'All Jacked Up,' and her collaborations with other country artists such as Big & Rich and Brooks & Dunn

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