I have to admit, I haven't been hitting much non-fiction in ebook form, working on,
For a New Liberty: The Libertarian Manifesto by Murray Rothbard, though. I get most of my non-fiction titles for free or up to about $2 at the fleamarkets... Which is interesting in that I bought my reader primarily for reading non-fiction titles... I seem to have gotten slightly off-track.
-MJ