This document summarizes what can be built with Google App Engine and highlights some of its key features. It lists examples like a simple issue tracker, aggregator, personal image hosting, and IM application. Some of the features highlighted include Python and Django support, a clean API design, open SDK, one click deployment, management console, and testing stubs. It also discusses stateless request handling, non-relational databases, offline processing, quotas, and future APIs like XMPP, task queues, and other languages. In the end, it invites questions from the audience.