So there's this guy who goes by the name of 冷静にP(ピー)を見守る会 (or P for short) in nico who finished Super Mario 1 in High Speed Mode. Whether he used an emulator or not remains to be seen, but he took it upon himself to play Mario 3 in the same settings with his commentary and reactions intact. Needless to say, every bit of it was hilarious.
P's most recent attempt in World 8 made the nico charts for a while, and while he died miserably a number of times, he did the the most surprising thing after finally getting to the boss.
http://www.sankakucomplex.com/charts/niconico/player.php?vid=sm10832595
Being a classic Mario fan, my hat is off to his tenacity. I'm watching his older vids in nico right now though Part 1 seems to be broken, which is a shame.

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