jQuery Beta 3 released! This is definitely going to be one of the best mobile frameworks, and yes, it does work well with PhoneGap. So, why is one of the best, if not the best. I say because not only is it based on the jQuery platform, but they support pretty much all browsers including those that do not support webkit. See http://jquerymobile.com/gbs/ for their graded support.

After using sencha and dojo to create mobile apps, I definitely think I will be putting all my future efforts into jQeury mobile!