IMPORTANT: This no longer works. It was hotfixed hours after this was published here on WCM.

I was in Howling Fjord for the first time today and noticed that you got xp for one-shotting dragonflayers with harpoons. I reset my xp/h calculator and found that it was faster xp than grinding quests was.

I was surprised that no one had put this on YouTube, and that only one of the 80 comments on wowhead pointed out that maybe this possibly could eventually give a few experience points. So once I had optimized the strategy a little, I made this footage.