Awsome!Doom kicks ass,so do these!
You said you needed Doom Sprites,then go here:
http://www.3dactionplanet.com/doom/poti/sprites.asp?p=imp
It doesnt have all of them,but its the best place for Doom sprites that i have found so far.
THis movies series is really good,so i hope you keep on making them now that you have some sprites.Keep up the good work!