You've gotta watch this Super Smash Bros. Melee documentary that follows some of the top players in the scene—it's quite good. Accessible, too: you don't need to be a fox-only no-items final destination type player to enjoy it; they break the game down wonderfully.
And as always, I continue to be amazed at how Smash players turned a party game into a competitive game.
Remember to watch the other parts of the documentary too, if you have the time: