The mother of all tool lists...
In a reply to my post about the Reflector add-in, Scott Dockendorf included a link to Scott Hanselman's blog. This blog contains a huge list of development- and power user tools. You should really have a look. There's a lot of interesting stuff there.
Mind you, I will be maintaining my short-list, as a means to keep track of stuff I regularly use. But I will definitely check out some of the stuff blogged but Scott Hanselman.