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Looking at pictures of famous people before they were famous is always pretty interesting and mind-boggling exercise.
But watching the terrible commercials famous people starred in before they were famous? Hilarious.
In the below video Tina Fey, Steve Carell, Channing Tatum, Simon Pegg, and a super, super young Leonardo DiCaprio (just to name a few) show off their fledgling acting skills.
Anyone feel like a Mountain Dew?
Have you seen any other famous celebrity commercials from the days of old?