YubiKey with TrueCrypt and LastPass
via vimeo.com
If you've used TrueCrypt to create an encrypted volume on your computer, you know how annoying it can be to have to remember a strong password. And if you didn't use a strong password to create the encrypted volume, why even bother?
YubiKey makes it easy to quickly mount the TrueCrypt volume using a very secure password that I could never remember. Also, keylogging programs won't be able to record your keystrokes if you don't have to press any keys! The YubiKey is particularly useful if you have to use a public or untrusted computer.
YubiKey also works well with LastPass and many other services like Google Apps.