that I can think of off the top of my head (read through, in no particular order):
Rape, by Joanna BourkeFive stars, the best I've read on the topic--and I've read several.
The Lucifer Effect, by Phillip ZimbardoAnnoying as hell, but lots of useful and interesting information
The Communist ManifestoSurprisingly excellent.
The Curious Incident of the Dog in the Night Time
Brilliant. I cried. It's also a fast/short read.
Introducing ShakespeareModerately terrible. Pet peeve; even more antifeminist than Shakespeare.
Introducing ExistentialismDidn't understand it, but now I know what to read.
Introducing PhilosophyVery useful, put lots of tidbits I knew in place and helped me develop a plan for further study.
Introducing EthicsAbout the same as Introducing Philosophy
Introducing DerridaMassively helpful. Plan to read it through again before I go back to actually reading Derrida.
WatchmenMixed feelings. The craftsmanship is amazing, and I have a deep fondness for Rorschach. It turns my stomach, but it's supposed to. Also, the source of my favorite Alan Moore quote.
The Rules of SurvivalExcellent,
highly recommended YA novel about the some of the subtleties of abusive situations and how to solve them.
Manipulating ParentsTERRIBLE. Prize moment? The discussion of how a teenage girl whose stepfather had "unwisely expressed a biological urge" with her was "manipulating" him by threatening to tell her mother if he didn't grant her special privileges. . . and this clearly had to be put to a stop. . .
How to Win Friends and Influence Peopleeh. See blog.
The last Twilight bookI cried, but for different reasons. . . ok, metaphorically. I do wish I could get my kids to stop reading these, and read something better.
The last Harry Potter book*shrugs*
The Ear, the Eye, and the ArmA good read-aloud book for the kids
UntappedExcellent. This is an accessible and well documented description of the history and present state of the petrol industry in Africa.
The Speed of DarkAnother novel about autism, not as good but still interesting; deals explicitly in autism rights issues without getting incredibly pedantic. . . though to be fair, it is kinda pedantic.
Manga versions of Othello, Julius Caesar, and the TempestVery helpful--incredibly readable. I have mixed feelings about the art and presentation, but this may be my favorite format for Shakespeare--I wish someone would put out full text versions. After reading these through two or three times, I'm sure I'd get much more out of reading the full text real-time or watching the plays--and they read very quickly.
Rules for RadicalsSome useful ideas, I would like to see this more practically developed. It's kinda funny how anti-socialist he is.
How to Lie With StatisticsA good book on interpreting statistics for beginners who haven't had a ton of math.
The Mythic ImaginationPost-Jungean exploration of mythology as psychology for modern life. Some useful insights, also a very annoying book (writing style and pre-suppositions of author.)
The first book in "Y, the last man"
First installment of a story about what happens when a plague kills almost everything with a Y chromosome. Funny, well drawn, and insightful.
Help at any costA bit of an expose on the teen reform industry; has proven to be incredibly relevant in my life since I picked it up last spring. Not a bad read, either.
Notice how closely it all matches up with what I was planning to read. . .