David Duchovny

Whether you're a famous singer, comedian or movie star, it never hurts to have a backup plan. Little surprise, then, that many entertainers have also pursued graduate degrees. But while some went for the obvious educational path, these 10 performers chose far more surprising options.

Sounds odd, but a fictionalized book mentioned on a TV show becoming a real book is nothing new for the publishing industry. In fact, tie-ins like Sterling's Gold have proven quite popular. That's because the shows have a built-in fan base that often numbers in the millions.