http://www.blue.sky.or.jp/grass/ Grass is a programming language that consists of only the letters v, w, and W.

http://unicodesnowmanforyou.com/ The snowman in Unicode has his own webpage.

http://en.wikipedia.org/wiki/Chlorine_trifluoride It burns asbestos.

http://www.youtube.com/watch?v=lPvv8pU68K8 A fan video for Reptilia by The Strokes using scenes from the movie Koyaanisqatsi.

http://en.wikipedia.org/wiki/Fj%C3%B6lnir_programming_language The Fjölnir programming language.

http://www.kibo.com/kibopost/happyweb/ Kibo on the next generation of the web.

http://en.wikipedia.org/wiki/Socialist_millionaire This is how you can see whether two people have the same number without giving away either number.

http://mysqlgame.com/ SQL queries the video game.

http://algebraicthunk.net/~dburrows/blog/entry/package-management-sudoku/ Solving Sudoku with the apt package manager.

http://www.bluem.net/en/mac/pashua/ Pashua is a simple way to create native MacOS X GUIs for various languages.