"Air" is a hacked up hard-as-balls remake of Super Mario Brothers cart, which you can download from your friendly neighborhood robot right here, patch your rom, and play on your PC with an emulator. Genisto, the beast behind many a painfully difficult and laborious speedruns such as Bionic Commando shows us how he pwns this game nasty in under 10 minutes. Watch him fly through bugs, tight corners, impossible jumps, defy gravity, and make even the best gamers shameful of their inferior digits (but technically they're known as the phelaaaangies). The official air site is unfortunately largely incompatible with your western sensory interfaces, but has some nice stills of the stages that will make you cringe.
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