I want to recommend an awesome science fiction movie:
The Man from Earth (2007)
Even though it's a science fiction movie, it doesn't have spaceships or aliens inside. It's not even in the future and the most sophisticated technology featured is an ipod or something. No time travel or dimension portals anywhere. There are no action scenes at all. There isn't even an antagonist here. No conspiracies or exotic locations either: The whole movie mainly plays in one single room.
And the plot?
Well, one man decides to move away and his academic colleages decide to pay him a visit. Then they sit in the nearly stripped living room of his house and talk. The end.
And yet the movie is stunning, exciting, surprising and enlightening ... one of the best science fiction movies ever.
But from the description you might already guess that this film was no big commercial success ... stuff like that simply can't compete with pocorn movies like Saw, Star Wars/Trek/Whatever and other blockbusters.
Anyway, thanks to illegal file sharing the movie gained popularity as an insider tip, raising it's profile far beyond anything the producer expected. In an unprecedented move, said producer Eric Wilkinson officially thanked the file-sharing community for distributing (and liking) his film.
Apart from telling us that you don't need to waste 100 million dollars to produce a good movie, we see beneficial effects of file sharing as well - especially for those whose works would simply be swept away in the wake of the marketing wave of richer, bloated, vengeful studios.
Sure, mostly only the sharers benefit from sharing. But hey, going as far as fining people for singing "Happy Birthday" in public is ridiculous.
And now go get the movie I was talking about (Buy the DVD right after previewing the pirated version)!