CELEBS WHO STARRED IN COMMERCIALS BEFORE THEY WERE FAMOUS,You never know who tomorrow's A-listers are going to be. That girl you see in a silly commercial today could be starring in a hit TV show tomorrow. Hey, it happened for Tina Fey, whose show "30 Rock" begins its final season on Oct. 4. Keep clicking to find out which stars got their start shilling in commercials.

Tina Fey

Way before she played Liz Lemon, Tina made bank being lovably quirky and awkward in this 1995 spot.tina fey mutual savings bank,tina fey 30 rock final season,

Channing Tatum

Before hitting it big in Hollywood, Channing got audiences revved up with this 2002 TV spot. And he didn't even need to strip for it!channing tatum mountain dew,10 years trailer channing tatum,channing tatum to direct magic mike 2,

Drew Barrymore

Before walking down the aisle with hubby Will Kopelman in June 2012, Drew got practice doing it as a tiny tyke in this poppin' 1979 spot.drew barrymore rice krispies,drew barrymore baby,

Brad Pitt

Once Brad's career popped with this 1989 commercial, the fun didn't stop. We wonder if Angelina Jolie had the hots for then-unknown Brad when she saw his sexy pecs in this yummy commercial.Brad Pitt pringles commercial,brad pitt bollywood,brad pitt angelina jolie,

Lindsay Lohan

Way before she was a scandal magnet, fresh-faced Lindsay "went ape" for this purple product.lindsay lohan jello commercial,Liz and Dick movie trailer,lindsay lohan new york hit and run,

Ben Affleck

Ben proved himself to be royally charming in this 1989 spot, which was one of his first-ever acting jobs.ben affleck burger king commercial,ben affleck matt damon,

Elisabeth Moss

Having this commercial resurface after she rose to fame on "Mad Men" must have given Elisabeth a real headache.elisabeth moss excedrin,elisabeth moss dating adam arkapaw,elisabeth moss mad men season 6,

John Travolta

John's been through some pretty humiliating stuff over the past few months, but this video, which features the then-21-year-old singing and dancing in a pretty compromising position, is all good, clean fun.john travolta safeguard commercial,john travolta retire from acting after son's died,

Courteney Cox

Courteney proved that this P-word isn't dirty after becoming the first person to say it on U.S. television in this 1985 TV spot.courtney cox tampax,

Matt LeBlanc

It seemed like Matt was rehearsing for his future "Friends" role, Joey Tribbiani, in this saucy late-'80s spot.matt leblanc heinz commercial,"episodes" renewed for third season,joey tribbiani's best moments,

Sarah Michelle Gellar

This company must have really liked little SMG, because they cast her in a series of commercials in the early '80s. She was pretty much their princess!sarah michelle gellar burger king,sarah michelle gellar son,

Morgan Freeman

It's difficult to make someone buy a disgusting-tasting product. But if anyone could do it -- and make it sound reasonable -- it's Morgan Freeman. He is the voice of God, after all.Morgan Freeman listerine commercial,morgan freeman lego movie,morgan freeman dark knight rises interview,

Abigail Breslin

Now a teenager, we bet Abigail is a wee bit embarrassed about this 1999 commercial, which was her first-ever acting job. But hey, everyone does it!Abigail Breslin toys r us commercial,abigail breslin with stargroves,

Seth Green

Seth plays the ultimate bratty mall rat, sporting a ridiculous hairdo and hitting on girls, in this '90s-licious commercial.seth green 1992 nerf,

John Goodman and Megan Mullally

Little did this 1983 commercial's casting agents know that they had not one, but two future stars on their hands: John Goodman and Megan Mullally.John Goodman and Megan Mullally 1983 McDonald's,Megan Mullally Party Down movie news,