tetris

OK, bear with this as it is an hour long. Google video describes it as:

A hard to find documentary about Tetris and its creator Alexey Pajitnov. Also covers the rivalaries between Nintendo and Atari and the absurdities of buying copyrights for software from a country that doesn't believe in property, much less intellectual property. Ultimately, a great documentary about a very important game.

That's right, a very important game.