Here is a simple application I built using jQuery Mobile and PhoneGap. Even though the application is simple, it covers some common requirements of mobile applications: database access through JSON services, multi-level master-detail views, parameter passing between views, etc.
At this fall’s jQuery Conference in Boston, MA, Filament Group’s Todd Parker and Scott Jehl presented the jQuery Mobile Framework keynote. The session covered the current state of the project, an overview of the releases since the first alpha last fall, direction for how best to make use of the framework today, and some upcoming tools
The info contained in the slides also forms a solid base to start developing from.