Nymh, Human Warlock of the EU server Drek'thar (and the real-world country of France) became the first World of Warcraft player to reach level 80 by working with an out-of-group Priest to spam area-of-effect attacks against rapidly-spawning mid-70s mobs, inspired by the technique of another World of Warcraft Warlock player named Jynxx, who eloquently explained the concept in a video (Note: probably won't make much sense if you're not a WoW addict already).
Time from 70 to 80: 27 hours.
Nymh did a lot of research and trial-and-error exploration of options in the Wrath of the Lich King beta test in order to be ready for the gauntlet after the EU launch, which of course came a little bit before the North American one. We'll note that the first-to-level-70-after-launch trophy went to another French player last year. Vive la France, no?
[Via WoW Insider]