I started feeling a bit paranoid tonight and decided I should install TrueCrypt on my Mac. It's a great utility that can create an encrypted virtual disk within a file container, encrypt an entire disk partition (system or non-system), and can even create hidden encrypted disks within encrypted disks (for the truly paranoid). I highly suggest it for anyone who travels and needs to deal with US Customs, which has taken to sifting through citizens' data without a warrant. Protect yourselves and your rights.

If I can get a handle on this app and its plethora of features, I may write a proper review of it.