The Pragmatic Programmers, publishers of exceptional software programming topics, have just added ePub and mobi formats as options for their books (they've already had PDF as an option for pre-release as well as released books).
http://media.pragprog.com/newsletters/2009-03-25.html
http://www.pragprog.com/frequently-a...estions/ebooks
I've purchased books from them in the past, including "pre-release" books that they deliver as PDFs and have used Mobigen/mobicreator to convert the PDFs to prc's with limited success. The PDFs have complex formatting, as they're pretty much publication-ready proofs, so footnotes and images were all over the place, as was kerning and other layout goodness.
Downloading a few, their conversion is decent with footnotes and references linked, pictures sized appropriately. The table of contents isn't referenced correctly so the Kindle menu can't find it, but contents work to jump between chapters.
In all, a wonderful addition to our ebook life.
I also downloaded the ePub versions and they looked good in calibre's reader.
Welcome Dave & Andy and Pragprog!
H