http://www.talesofthepast.com/
Friend of mine sent me this the other day. It's a machinima full-feature film based on the Ashbringer lore. It's pretty cool imo and well developed (considering it's a machinima afterall), even recommended for people that don't play WoW or MMORPGs at all. If you are interested watch the first two films first (first is 14 minutes long, second is 41 minutes long) before you watch the third part (the one where the story truly shines). You can skip the prequels.
More info at:
Tales of the Past - WoWWiki - Your guide to the World of Warcraft 