Wowhead - Thottbot Killer

Wowhead is a new database site for World of Warcraft... First impressions are excellent! It really makes browsing items a pleasure. It's really simple to do complex listings such as, "single-handed maces, over level 44, rare or better, usable by a druid, and part of a set" ... you can get even more complex than that!

The database is a little sparse at the moment. That's gotta be expected considering they only came out of beta, about a month ago.