Google I/O 2008: Engaging User Experiences with App Engine
Web developers and designers can create full-fledged web applications with Google App Engine. Learn how to improve the look and feel of your web application from members of the Google UX team. We'll cover authentication, form validation, imaging, page design, and using other Google APIs to make your application delightful to users. We'll also cover best practices for designer to developer workflows.
John Skidgel and Lindsey Simon (Google)