I just had a brief email exchange with Tim O'Reilly regarding a Nutshell
series book for Cisco IOS.
He says they'd love to do such a book; the only missing piece was finding
someone to write it.
I was told that if I knew of anyone who'd be interested in writing such a
book, to direct them to http://www.ora.com/oreilly/author/intro.html
So there ya go....