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

Suzanne Somers
Age: 66
Occupation: Actress, Author, and Entrepreneur
Known For: Her role as Chrissy Snow on 'Three's Company,' her series of best-selling self-help books, her many different product lines, and her wacky presentations on the Home Shopping Network

John Mayer
Age: 36
Occupation: Singer, Songwriter, and Musician
Known For: Songs such as 'Your Body Is a Wonderland' and 'Waiting on the World to Change,' winning seven Grammy Awards, his playboy reputation, being a former Twitter addict, and saying more than a few regretful things during interviews

Angela Lansbury
Age: 87
Occupation: Actress
Known For: A eight-decade career on stage, TV, and screen, her role as writer and sleuth Jessica Fletcher on the series 'Murder, She Wrote,' three Oscar nominations, and winning five Tonys and 19 Emmys

Bob Weir
Age: 65
Occupation: Singer, Songwriter, and Musician
Known For: Co-founding the Grateful Dead with the late Jerry Garcia, his unique style of complex voiceleading, and bringing an unusual depth and a new approach to the role of rhythm guitar expression

Tim Robbins
Age: 54
Occupation: Actor, Screenwriter, and Activist
Known For: Roles in films such as 'The Shawshank Redemption,' winning an Oscar for his performance in 'Mystic River,' his longtime former relationship with actress Susan Sarandon, and being a very vocal opponent of the war in Iraq