Whatever… I don’t have the time to write it up again right now, so I’m posting some links and news from the top of my head. Hopefully, it’ll be of some value to you.
Wowhead - World of Warcraft Database. The one!
WoWWiki - The "official" World of Warcraft Wiki. Vastly useful!
WoW Model Viewer - A very nice and handy tool to get your grubby hands on some of the goodness hidden inside those MPQ files. Very useful if you want to spice some up the design of your WoW Blog, for example.
Antiarc’s WoW Armory Tools - A small collection of PHP scripts that connect to the official WoW Armory and generate listings and signatures from it. Quite handy, but a bit outdated right now.
Be Imba! - An online character auditor for WoW. It will try to evaluate your talent distribution, your equipment and your gems and enchants. It’s a fun and handy tool, but you should take it with a grain of salt.
Loot Rank for WoW - This site is able to generate a gear listing from all available gear, based on your prioritisation of stats.
Warcrafter - This is a full features character sandbox. You can import, edit and play with all character options to simulate gear upgrades, talent changes, and other things. It’s quite powerful and easy to use.
Wow Web Stats - Widely known and valued, this online site parses and hosts combat logs. It breaks them apart and provides a very nice and powerful interface to navigate through any aspect of your logged raid.
chardev.org - Yeah, another character planner. I know, sue me.