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

Seth Rogen
Age: 30
Occupation: Actor and Comedian
Known For: Starring in the movies 'The 40-Year-Old Virgin,' 'Knocked Up' and 'Funny People,' co-writing and starring in 'Superbad,' 'Pineapple Express' and 'The Green Hornet,' and becoming almost unrecognizable after dropping a lot of weight a couple years ago

Emma Watson
Age: 22
Occupation: Actress
Known For: Playing Hermione Granger in all eight of the films in the 'Harry Potter' movie franchise, modeling for Burberry's, being a student at Brown University, and causing a stir among fashionistas when she cut her long hair boyishly short

Roy Clark
Age: 79
Occupation: Country Music Entertainer
Known For: Hosting 'Hee Haw,' which helped popularize the country music genre, frequently guest-hosting for Johnny Carson on 'The Tonight Show,' being a skilled guitarist and banjo player, and his hit songs 'Yesterday, When I Was Young' and 'Thank God and Greyhound'

Emma Thompson
Age: 53
Occupation: Actress
Known For: Her Oscar-winning role in 'Howards End,' her Oscar-winning screenplay for 'Sense and Sensibility,' Oscar nominations for 'The Remains of the Day' and 'In the Name of the Father,' and her former marriage to actor Kenneth Branagh

Linda Perry
Age: 47
Occupation: Singer and Songwriter
Known For: Being the frontwoman and primary songwriter for the group 4 Non Blondes, known for songs like 'What's Up?,' founding two record labels, and writing and producing hit songs for other artists like Pink's 'Get the Party Started' and Christina Aguilera's 'Beautiful'

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