Mook over on TheMookNet has made some really nice fillable PDFs, charts, and aides to use with GURPS.
If you are feeling the lack of a decent monster manual I just download the Natural Encyclopedia by Kevin Munoz.
UPDATE: I found the latest version and linked to it instead. Thanks Dan for pointing it out.
Sins of the Crusade S01 E03 - Taranto
4 hours ago