AuroraUX, a Solaris derivative written in Ada.
The Rubber Duck Method of Debugging, this method is similar to confessional debugging but without disturbing your coworkers.
Bit Twiddling Hacks, a really good collection of bit twiddling hacks.
Search EFF’s FOIA Documents, the electronic frontier foundation has made available and indexed all of the documents they have procured under the freedom of information act.
USB sniffing on linux, how to use wireshark to sniff USB devices.