Some sites I've found useful:
Open RPG SJGames RPTools SciFi Wiki Wikipaedia Google Maps
The Mook Mook's GURPS Combat (worked examples)
Reduce your workload by Reusing or Recycling freely available ideas
Some sites I've found useful:
Open RPG SJGames RPTools SciFi Wiki Wikipaedia Google Maps
The Mook Mook's GURPS Combat (worked examples)
YoJimBeau