Well, on the website http://www.cyberscore.me.uk/ which is used to post and compare personal high scores and records people have in games, Packattack seems to have the highest amount of 1st place spots by far
Also, one example of his amazing work imo is this Super Monkey Ball replay --
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avideo -- http://www.youtube.com/watch?v=uHHsvbyR7YA
Big congrats to Black Turtle. Also, turtles are pretty cool