By People Staff
Updated December 13, 2006 11:00 AM
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Introduced just last year, YouTube.com revolutionized the Internet. With more than 70 million videos viewed a day, these three stood out:

EXPERIMENT #137: A clip of Stephen Voltz and Fritz Grobe dropping Mentos in Diet Coke, with the resulting explosions set to music, was viewed 6 million times; the Maine duo took their stunt on the road and inspired copycats everywhere.