We have a LOT of really cool stuff here at EN World. Thing is, much of it is scattered about in articles, in posts, in wiki pages, and so on. This post is my attempt to list just some of the things you may have missed.
Ex-WotC Employees - where are they now? A (slightly depressing) list of notable folks who have left or been laid-off from WotC over the last decade or so, and where they are now.
d20 Modern SRD - also includes d20 Future, and some third party stuff, plus Prime Directive, the Star Trek setting.
Nice reference! Might I also humbly suggest EN World's Creature Catalog as a resource for 3e/3.5e conversions of older edition monsters? We're aiming to get them all converted someday.