The WGA represents screenwriters working in Hollywood and offers helpful information to members as well as aspiring non-members.
Go to Writers Guild
Always updated domestic and intl. box office results for films in release, plus the highest-grossing films of all time, the highest grossing R-rated film of all time, the highest-grossing subtitled film and more!
Go to Box Office Mojo
This useful site logs script and pitch sales in Hollywood. Find out which agencies, managers and producers are doing deals.
Go to Done Deal Pro
Find movie scripts, teleplays, radio transcripts and anime scripts, or post your own unproduced script online.
Go to Simply Scripts
Because no self-respecting writer is ever too far from good leaf, No B.S. Screenwriting highly recommends