Publisher of Animal Books, as well as other really great series, such as
Annoyances
CD Bookshelves - Most, if not all, O'Reilly books on a subject on one handy set of CDs. But Is Anything Better Than Paper?
Developer's Notebooks
Hacks - Or how to tweak your tools to get the most use out of 'em.
Head First
In A Nutshell (Animal Book)
Missing Manuals
Pocket References (Animal Book)
Personal Trainer
Technology & Society
www.petdance.com
See also Safari Tech Books Online, Open Books Project
See original on c2.com 