A lot of people have side hustles from their daily jobs. Your waiter friend is really an actor. That girl in retail sells homemade jewelry on Etsy. And your buddy in that small film that grossed $825 million worldwide strums a guitar in his free time. After watching this and this, we figured JoGoLe couldn't raise his cool quotient any higher, but then he turns up at Sundance with a guitar and pulls out "Hey Jude." Because he's Joseph Gordon-Levitt. And he can do no wrong.