From those I remembered to log on goodreads...
1) Art of Unix programming - amazing book, lots of "ah-ha" moments. Enlightening is the word I suppose.
2) Mythical man month - very uneven. Some chapters are insightful, some are hopelessly outdated. It's short though so it's not too hard to finish.
3) Flowers for Algernon - meh
4) Fermat's Enigma by Simon Singh - fun pop sci, enjoyed it
5) Whatever and Elementary Particles by Houellebecq - really liked them (especially Whatever), but I'm not sure I would recommend them since they're so... dark