Thought I'd start a topic for people to post any resource sites they think are good to visit, then some people who want some fun resources and don't know where to look can find them easier. I'll try to keep the status of sites being down up to date when I can...
Heres a few I go to:
RMXP & 2000/3 Resources:
http://lrpgm.com/site/index.php?page=resources
http://gmc.streetrpg.com/principal.php
http://www.dubealex.com/creation_asylum/
http://www.kobrasrealm.com/
http://xrpg.net/xrpg/graphicsindex.php
http://www.rios-ent.com/
http://creativegames.streetrpg.com/home/
RMXP Resources:
http://www.fantasy-zone.ssxh.net/index.php?name=coppermine&cat=2
http://www.rmxp.net/resources.htm found by Tails07
http://www.tails07.netcessorhost.com/downloads/pafiledb.php found by Tails07
RM2000/3 Resources:
http://www.phylomortis.com/
http://www.rpg2knet.com/
http://rmdatabase.net/ie/?id=resources&
http://olls.impressur.com/
http://www.m2kbrothers.com/Site/rm2k.php
http://www.gaminggroundzero.com/home.html
http://www.academiarpg.com/index.php?seccion=material&material=recursos
http://www.alianzahispana.cjb.net/
http://charas-project.net/resources.php found by Tails07
Other Graphic Resources:
http://www.nes-snes-sprites.com/ found by Saytr
Music Files:
http://www.ocremix.org - Game Music Remixes (MP3)
http://www.vgmusic.com - Game Music (Midi)