They weren't always huge stars. Even today's A-listers were once yesterday's struggling actors. Now they have directors dying to work with them but back in the day, they sat in a waiting room with hundreds of other hopefuls, waiting for an audition and their big break.
Some of these celebrities (like Hugh Jackman and Miley Cyrus) are auditioning for the parts that launched their careers. Others (like Scarlett Johansson and Kurt Russell) lost their auditions but still went on to have great success.
We've compiled some of the best celebrity audition tapes to take a look back at today's biggest stars before they were today's biggest stars.