Want proof that people are already playing more than their share of Super Smash Bros. Brawl? They must be, because there have already been not one, not two, but eighteen glitches and exploits discovered, and the game hasn’t even been released in North America yet! What’s even more interesting is that several of them are even in Super Smash Bros. Melee. There are several more videos after the jump.
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If you look closely, you'll notice that by using Bowser's over-B move, he regains his jump and doesn't touch the platform.

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Oddly enough, WW Link’s down-B occasionally causes him to hover.

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Snake is stubborn, what else can I say?

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This isn’t so much a glitch or exploit as it is a cheap tactic.