books

i've got holidays for the next couple months and i've got no social life or off-line friends to speak of.
what are some good text books i can read during this time?
any subject is fine really, as long as it's somehow related to computers.
and by 'good' i mean detailed and thorough, not fun to read.

I've had more fun writing toy Cell programs for my PS3 than I have actually playing games on it. IBM's Cell documentation is pretty good.