Not every name on this list managed to make it all the way through university! Sometimes, you go into further education and find out that it's just not for you. Ben Stiller probably thought he was making the logical move when he signed on at the University of California. He enrolled as a film student, which, given his chosen career, makes a lot of sense. Despite that, he didn't even make it through a full year, and ended up going home and moving back in with his parents.
Stiller can see the funny side of his failed attempt at getting a degree, describing himself as a 'typical dropout', but his success tells us that sometimes it isn't always about picking up a certificate after a few years of hard study. For the exceptionally talented few, you can do it all on your own without the qualifications.