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

Bryant Gumbel
Age: 64
Occupation: Television Journalist and Sportscaster
Known For: Fifteen years as co-host of NBC's 'The Today Show,' and currently hosting HBO's acclaimed investigative series 'Real Sports with Bryant Gumbel'

Tom Sizemore
Age: 51
Occupation: Actor
Known For: Roles in films such as 'Saving Private Ryan,' 'Strange Days,' 'Pearl Harbor,' and 'Black Hawk Down,' a long history of substance abuse, and his former relationship with 'Hollywood Madam' Heidi Fleiss

Zachary Levi
Age: 32
Occupation: Actor
Known For: Playing the title character in the TV series 'Chuck,' four years on the show 'Less than Perfect,' and voicing Flynn Rider in the animated film 'Tangled'