Is there a jQuery project out there, that create on of these "Password-strength-meters" right by a password box and updates the strength-bar when something is typed into the field?
Do you know any good ones?
I don't know if exists an jQuery plugin for that, but you can use this google url: https://www.google.com/accounts/RatePassword?Passwd={0}
EDIT: here an example using jQuery.
here's a comprehensive list:
http://www.webresourcesdepot.com/10-password-strength-meter-scripts-for-a-better-registration-interface/