From Jennifer Lawrence's 'My Super Sweet 16' To Ben Affleck's Burger King Ad: 10 Stars Who Got Their Start In Embarassing Commercials

While accepting the award for Outstanding Female Actor at the 2013 SAG Awards on Sunday, "Silver Linings Playbook" star Jennifer Lawrence acknowledged she owed some of her success to a commercial she did for MTV's "My Super Sweet 16."

"I want to thank MTV," Lawrence said. "I'll explain that. I earned my SAG card when I was 14. I did an MTV promo for 'My Super Sweet 16.' And I remember getting it in the mail and it being the best day of my entire life, because it officially made me a professional actor, which put me in the category with all of you."

Lawrence is one of several stars who got their start by appearing in commercials.

Keanu Reeves

In 1987, "Matrix" star Keanu Reeves appeared in a Corn Flakes ad as a waiter who can't seem to get enough of the cereal.

Tina Fey

Before she was an award-winning actress and writer for hit shows like "Saturday Night Live" and "30 Rock," Tina Fey appeared in an awkward commercial for Mutual Savings Bank. The 1995 TV spot was filmed while Fey was a member of Chicago's famed improv troupe Second City.

Mutual Savings Bank's "Hi!" Featuring Tina Fey from the Purple Onion Archives on Vimeo.

Michael Fassbender

He may have shot to fame after his riveting performance in "Shame," but in 2004, Irish actor Michael Fassbender was simply known as the guy from the Guinness commercial.

Brad Pitt

In 1988, Brad Pitt appeared as a shirtless surfer dude in a colorful advert for Pringles potato chips. A few years later, the actor would take on his breakout role in the 1991 comedy "Thelma and Louise."

Leonardo Dicaprio

"Django Unchained" star Leonardo DiCaprio was 14 years old when he appeared in a 1988 commercial for Bubble Yum.

Ben Affleck

Today, Ben Affleck is a remarkable Hollywood success story, but, in 1989, the "Argo" director was just getting his start in the industry. Affleck, then 17, starred in a charming Burger King promo.