Tetris is one of the only games that you can safely assume everyone has tried at least once.  It's also one of the only games that has no true champion.

That is what this documentary tries to explain.  How Tetris became the phenomenon, obsession and iconic video game that it is today.  Ecstasy Of Order: The Tetris Masters, puts the worlds best Tetris players head to head and will be released in 2012.  In the meantime, check out the official trailer for it below.

I don't think you can find anyone who has not played Tetris, or who wouldn't know this music in any situation.

Even when it's not the original theme.

Finally why don't you go brush up on your Tetris skills here.