Jim Minatel's Wrox Book Editor Blog: Writing a good book proposal for me
http://wroxblog.typepad.com/minatel/2005/04/writing_a_good_.html
'If you can do all of that in a couple of pages, you'll be several steps ahead of most of the "I want to write a book" email I get.'
Text Processing in Python (a book)
http://gnosis.cx/TPiP
"...c'mon, would it kill a few of you to donate a buck?"