Best Form Validation framework (...jQuery)

There are lots of ways for doing form validations, but I think this jQuery validation plugin is best of all. It's very easy to write and understand form validation using jQuery validation plugin. We can also rely on it's cross-browser compatibility as jQuery supports almost all browsers.

reference links:
http://www.webreference.com/programming/javascript/jquery/form_validation/
http://docs.jquery.com/Plugins/Validation
http://docs.jquery.com/Plugins/Validation/validate#toptions