Watch A-list stars audition for their big breakout roles!

Ever wondered how a famous actor got their first big role? This video will show you. You can watch clips of people who are now huge stars auditioning for the role that made them famous.

You can see Megan Fox audition (and fumble her words) for Transformers, 12-year-old Natalie Portman try out for Leon, Hugh Jackman being Wolverine for the first time and lots more. Check it out!