Going all the way back to Homer's Odyssey, some of our finest stories take place on voyages or quests of some kind, where our hero (or heroine) not only experiences new sights and adventures, but also some transformation in thinking, circumstance, or attitude as a result. The road movie is the cinematic equivalent.
As Ray Bradbury understood, we humans are innately fascinated by the unknown and by what may lie in the future. With contemporary society in the state it's in, the idea of aliens, time warps and alternate realities can seem downright appealing -- a welcome escape. These ten features provide all that, and more.