We always talk about "Where are they now?' but what about, "Where were they before?" Here's nine hilariously embarrassing commercials our favorite celebrities were in before they got famous:1. Brad Pitt - PringlesI've never seen anyone so excited to eat Pringles. These people make it look like the most fun activity ever. Oh Brad Pitt, the things you've achieved. 2. Steve Carell - Brown's ChickenAfter seeing Steve Carell as Micheal Scott, my mind just pictures this commercial starring The Office character, and it makes it so much better, trust me. 3. John Travolta - Safe GuardIn this commercial