SecurityStats.com
scores the strength of your password. How scoring works: Your password will be checked for complexity against some guidelines. In addition, your password will also be checked against a hacking dictionary containing commonly used passwords and keystroke combinations. Not sure if this is safe proof, but it doesn't hurt to give it a try.
Well, the paranoid among you might say that this is a phishing site trying to capture all our passwords to add them to another hacking dictionary. Could be. Everything is possible.