You might have missed them the first time around, but I bet you never knew they were there!
Here are some currently famous people who played not so famous roles.
Jane Krakowski (30 Rock) In 'National Lampoon's Vacation'
Jane Lynch In 'The Fugitive'
Bret Mackenzie (Flight Of The Conchords) In Lord Of The Rings
Jack Black & Giovanni Ribisi In 'X-Files'
Andy Samberg In 'Arrested Development'
Ryan Gosling In 'Are You Afraid Of The Dark'
Miley Cyrus In 'Big Fish'
Jessica Alba In 'The Secret World Of Alex Mac'
Bill Paxton In 'Terminator'
Jake Gyllenhaal In 'City Slickers'
Stephen Colbert On 'Whose Line Is It Anyway?'
Steve Buscemi In 'Pulp Fiction'
Adam Sandler In 'The Cosby Show'
Josh Brolin In 'The Goonies'
Jack Nicholson In 'Little Shop Of Horrors'
Tobey Maguire In 'The Wizard'
Nicolas Cage In 'Fast Times At Ridgemont High'
Elijah Wood In 'Back To The Future 2'
Rainn Wilson (The Office) In 'Almost Famous'
John Krasinski In 'Jarhead'
Ron Jeremy In 'Ghostbusters'
Seth Rogen In 'Donnie Darko'
Jeff Goldblum In 'Annie Hall'
George Clooney In 'Roseanne'