The keynote on the last day of JavaOne is all about toys. James Gosling presented a wide array of projects and products that have used the power of java in all sorts of ways.
I spent the rest of the day attending technical sessions. The most interesting one was an introduction to Google Guice. I am definitely going to take a closer look at that. Guice will probably form the foundation for JSR 330: Dependency Injection for Java, so it should not be too much of an effort migrating over to this standard from Guice in the future if that is desirable.