Here are my resources for icon making:

Screencaps:

crystalcaps
dj43
homeofthenutty
merlin_emrys
midnight_road
moordryd_caps
Screencapped.net & screencappednet
summer_skin
http://kissthemgoodbye.net/
http://starwarsscreencaps.com/
http://dana.thedudes.nu/gallery2/main.php
rebmastu
triltaison
tsuisoka

http://www.avatarspiritmedia.net/
http://www.cap-that.com/
http://clonewars.dramatic-personae.net/index.php
http://disparue.org/gallery/
http://www.buffyworld.com/buffy/index.php
http://buffy.wikia.com/wiki/Buffy_the_Vampire_Slayer_and_Angel
http://www.lack-of-surprise.com/moments/
http://ladymanson.com/ShadowofReflection/caps.php
http://www.homeofthenutty.com/movies/screencaps/index.php
http://www.homeofthenutty.com/harrypotter/screencaps/index.php
http://scifi.homeofthenutty.com/index.php?cat=13
http://doctorwho.grande-caps.net/gallery/index.php
http://scfimz.grande-caps.net/gallery/
http://www.whedon.grande-caps.net/gallery/
http://sc.aithine.org/sherlock/
http://www.the-medusa-cascade.com/gallery/index.php
Wookepedia

Textures:

about_forever proverbsun
blackpatrol
cellardooricons
kassieland