Realtimerendering.com - site of my favourite computer graphics book.
Oogst's raytracer - nice raytracer, inspired me to code my own raytracer after seeing it on Flipcode as IOTD.
Igneus - global illumination renderer for windows
Geers.tk - source of all madness...
Gerrit PA1GFW - Ham radio and idiot photos :)
John Alexander Photoshoots - Photography
Miss Kittin - electro, be sure to check "The First Album" with The Hacker
Delft University of Technology - where I spend my time