I heartily recommend Cryptonomicon. It's Neal Stephenson's longest book, and it's got tons of interesting things going on, not the least of which is that you get a - comprehensible - introduction to various theories of cryptography.
Read it and be a better geek for it.
Gatac
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Katy: Can I have the skill 'drive car off bridge and have parachute handy'?
Justin: It's kind of a limited skill.
Greg: Depends on how often you drive off bridges.
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