Paradoxes
We've talked about Newcomb's Paradox down the pub, but paradoxes plague us frequently and often seem to be at the root of really difficult problems.
Knotted Doughnuts and Other Mathematical EntertainmentsParadoxes
Knotted Doughnuts and Other Mathematical En...
by Martin Gardner

Contains 2 chapters on Newcomb's Paradox.
Paradoxes
by R. M. Sainsbury

A good, short, readable introduction to the classical philosophical paradoxes.