Steve Gibson of the Security Now! podcast has created an Ultra High Security Password Generator. For those of you who are very paranoid about making sure no one hacks into your wireless connection, this page is for you. No more weak wireless passphrases.
The cool part? The page is a SSL page, so it is securely transmitted over the Internet. It is marked as expired in 1999, so no ISP will cache it, and each key is only displayed once without ever being reused again.
Basically the passphrases generated are uncrackable or as close as it gets to that.