Stumbled upon this. Haven't seen anyone else mention it, so I thought I'd share:

Comedians/screenwriters Thomas Lennon and Robert Ben Garant (from Reno 911) just released a book called Writing Screenplays for Fun and Profit: How We Made a Billion Dollars at the Box Office, and You Can Too!

Sounds like a funny (and different) angle on the business, and how to get sold.

Good interview:
http://www.npr.org/2011/07/05/137617840/you-too-can-be-a-successful-screenwriter