Quite a while back, while I was surfing for "fun" bits of information to be included in some course notes, I came across this
e-book version of
Hal's Legacy.
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Hal (or more formally, Hal-9000), as you might recall, is the supercomputer in the science fiction book/movie classic
2001: A Space Odyssey who (yes, I insist,
who) eventually committed murder in an endeavor of self-preservation.
Hal's Legacy is a great book for students interested in artificial intelligence, natural language processing, robotics, or just geeks in general. And it's online in its entirety for free!
Enjoy!