I've mentioned PGP and encryption previously. Yesterday, GrepLaw posted an interview with Phil Zimmerman, in which he discussed the role of cryptography in promoting the interests of the individual over those of the government. In part:
"It is often discussed how to restrict criminals' use of cryptography. Criminals have not killed as many as governments have, historically. As all of us move into a future where life is more and more digital the technology creates a windfall for all governments. I want to deny them that windfall. It is just a matter of good civic hygiene."
Link to previous PGP post fixed; sorry about that.