Yesterday, while idling time at the Barnes and Noble on Peachtree, I found, as is usual for me, quite a few books that looked really good. Since I tried to look at all of them in finite time, I didn't really get far with any one of them. I'll list them here so that I don't forget (and for the benefit of anyone looking for something interesting).
Godel, Escher, Bach: An Eternal Golden Braid by Douglas Hofstadter.
Purple Cow by Seth Godin (the Squidoo guy) A couple of Seth's other books are available as free ebooks somewhere out there.
Envisioning Information by Edward Tufte. Check out this free chapter here on sparklines.
The Elements of User Experience by Jesse James Garrett, the guy who coined the term Ajax. This is a small book that focuses on user-centered design for the web.
Getting Things Done by David Allen. I tend to see GTD referenced on all kinds of blogs, and some people implement the book's principles in interesting technical ways. Might be good.
Desert Solitaire by Edward Abbey. Our trip to Moab last summer was really cool. Arches is a great park, and I'm sure it was better back when Abbey was out there.