If you haven't seen Watchmen (somehow) then stop whatever you're doing, run to the nearest copy, and jam it in the first DVD or BluRay player you can find. It will blow your mind.
Or, if you're in the mood for something really out of the ordinary, you could check out one of my friend Tristan Newcomb's films. They're surreal absurdist explorations of existentialism (with Puppets!), and there's no way you've seen anything like them before. You probably won't find them in any local stores, but I know you can download them on Amazon.com or from his website. I would suggest Only Interstellar Pinball Lives Forever, but Summer of the Chew Toy Soul is awesome too.