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

Bob Newhart
Age: 83
Occupation: Actor and Comedian
Known For: His hilariously dry delivery, legendary TV programs like 'The Bob Newhart Show' and 'Newhart,' and his ground-breaking 1960 comedy album 'The Button-Down Mind of Bob Newhart,' which is still considered one of the best comedy recordings of all time

Raquel Welch
Age: 72
Occupation: Actress
Known For: Wearing a fur bikini in 1967's 'One Million Years B.C.' and being prominently featured in the movie poster that has adorned the walls of countless guys for decades, being a pitchwoman for Foster Grant, and her impossibly ageless beauty

Michael Keaton
Age: 61
Occupation: Actor
Known For: Roles in 'Mr. Mom,' 'Beetlejuice,' 'Batman' and 'Batman Returns,' voiceover work in 'Cars' and 'Toy Story 3,' and a previous long-term relationship with actress Courteney Cox

Dweezil Zappa
Age: 43
Occupation: Musician and Actor
Known For: Movie roles in 'The Running Man' and 'Pretty in Pink,' voicing the title character in the animated series 'Duckman,' musical collaborations with artists including Winger, "Weird Al" Yankovic and Lisa Loeb, and being the son of the legendary late rocker Frank Zappa

Rose McGowan
Age: 39
Occupation: Actress
Known For: Her role as Paige Matthews on 'Charmed,' former engagements to shock-rocker Marilyn Manson and director Robert Rodriguez, and plastic surgery that has left her almost unrecognizable