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

David Letterman
Age: 65
Occupation: Comedian, Writer and Talk Show Host
Known For: Hosting ‘Late Night with David Letterman’ on NBC and later ‘Late Show with David Letterman’ on CBS, having the longest late-night hosting career in American history, his Worldwide Pants production company, and providing a textbook example of the right way to publicly handle a nasty scandal

Vince Gill
Age: 55
Occupation: Singer, Songwriter and Musician
Known For:Heading up the Pure Prairie League in the 1970s before achieving massive success as a country star, charting over 40 singles including ‘I Still Believe in You’ and ‘Tryin’ to Get Over You,’ racking up more Grammys than any other male country artist in history, and his marriage to Christian/pop singer Amy Grant

Ed O’Neill
Age: 66
Occupation: Actor
Known For: His iconic portrayal of Al Bundy on the sitcom ‘Married… with Children,’ his Emmy-winning current role of Jay Pritchett on ‘Modern Family,’ and appearing in movies including ‘Wayne’s World’ and ‘The Bone Collector’

David Cassidy
Age: 62
Occupation: Singer, Songwriter and Actor
Known For: Playing eldest son Keith Partridge in the 1970s musical-sitcom ‘The Partridge Family,’ which made him a swoon-worthy teen idol during the same time period, competing on the 2011 season of ‘Celebrity Apprentice,’ performing in stage shows such as ‘Joseph and the Amazing Technicolor Dreamcoat,’ and being the step-son of his ‘Partridge Family’ mom Shirley Jones

Claire Danes
Age: 33
Occupation: Actress
Known For: Playing Angela Chase on the short-lived but awesome ‘My So-Called Life,’ other movie roles in ‘Romeo + Juliet’ and ‘Terminator 3: Rise of the Machines,’ her Emmy-winning role as the title character in the HBO movie ‘Temple Grandin,’ currently starring on the Showtime series ‘Homeland,’ and her marriage to actor Hugh Dancy