Diceware works well: http://world.std.com/~reinhold/diceware.html http://world.std.com/~reinhold/diceware.html I find it surprisingly easy to remember even a

Diceware works well: http://world.std.com/~reinhold/diceware.html http://world.std.com/~reinhold/diceware.html I find it surprisingly easy to remember even a ten word passphrase, which has about 130 bits of entropy. Such a long phrase is overkill for a web site, but is good for encrypted drives.