I found these two "geeky" reading lists this morning over at wired.com. Even though I've read quite a few of them, there's never enough sci-fi in my life...
[Greatest Geek Books of All Time]
[9 Essential Geek Books]
<< And then there was this. (Insert *chorus of angels singing.*) Whichbook.net allows you to pretty accurately plug in what you're looking for using these slider scales, then suggests a reading list just for you! Whaaaattt?? Be still my heart!!
Check it out here [Whichbook.net]