Canadian Screenwriter Collection Society (CSCS) - Created to claim, collect, administer and distribute royalties and levies that film and television writers are entitled to.
http://www.writersguildofcanada.com/cscs/index.html

Drew's Script-o-rama - Great bank of a variety of scripts (film, t.v., etc.)
http://www.script-o-rama.com/

Movie Magic Screenwriter - While I can't endorse this product personally a good writer friend of mine does. Apparently amazing to help writing any kind of screen. If anyone has $300 kicking around you can buy it for me. Here is a link for downloading a demo.
http://download.cnet.com/downloads/0-10051-100-6033628.html
The company that makes it: http://www.screenplay.com/

Resources - Software/magazines etc. to aid in writing and story development. I'd buy it all but then I'd have no cash to eat.
http://www.screenstyle.com/

Resources (ANOTHER) - software/magazines etc to aid in writing and story development. I'd buy it all but then I'd have no cash to buy coffee.
http://store.yahoo.com/dramatica/index.html

Screenwriter's Guild of America - industry professionals united for the mutual aid and promotion of common interest. Great resource (production companies, agents, classifieds, etc.)
http://www.screenwritersguild.com/

Slamdance - Resource on info., links, contests, and festivals.
http://www.slamdance.com/2001/

Writer's Digest Big contests sometimes for screenplays
http://www.writersdigest.com/catalog/contest_frame.html