Although European World of Warcraft: Cataclysm players got a nine-hour headstart on American gamers, one was still able to reach the new level cap of 85 before the game was even released in the US.
The video talks about his methods and actual completion time, then starts going into science and learning or something, at which point I tuned out and woke up in a pool of my own spittle moments later.
Check out Forscience’s Armory page for more details.