Neonflux:
100+ character sheets for many systems in PDF and TIFF format, plus
adventures for D&D and Palladium.
http://neonflux.tripod.com/
RPGArchive:
Archive of adventures categorized by genre and system. Accepts
submissions.
http://www.rpgarchive.com/
RPG Sheets:
Over 700 character sheets from over 200 game systems, including
official sheets, custom and WebRPG.com sheets. Accepts submissions.
http://www.rpgsheets.com/
The RPG Character Mortuary:
Final resting place for characters who died tragically or otherwise
in roleplaying games. Accepts submissions.
http://www.electricferret.com/mortuary/
The Keep:
A large collection of files, mostly related to RPGs: systems, rule
supplements, information about or for campaign settings, adventures
and ideas for adventures, other GM aids, fiction, humour, and
miscellaneous RPG material.
http://keep.trawna.com/
RPG Hoard - downloadable resources:
Some adventures, fonts, maps, monsters, programs, and other
resources for some systems.
http://www.rpghoard.com/
The Dragons' Den:
Netbooks, adventures, and character graveyards for D&D, West End's
Star Wars, and the World of Darkness.
http://www.geocities.com/quizzy_the_quick/
