game programming tutorials and source code for a variety of languages and platforms. Also, because this is a wiki, you are encouraged to contribute your knowledge and help the repository grow!
developer's resource for computer interfacing, especially USB, serial (COM) ports, mass storage, Ethernet and Internet for embedded systems, and the parallel port.
a great list of keyboard shortcuts for the upcoming IE7. What makes it even greater, however, is that almost all of the shortcuts work identically in Firefox.