This week's book giveaway is in the Performance forum. We're giving away four copies of The Java Performance Companion and have Charlie Hunt, Monica Beckwith, Poonam Parhar, & Bengt Rutisson on-line! See this thread for details.
I created a Google App Engine sample application which uses the Front Man application framework. They seem to work well together so far. Here's an article I wrote which details how I did it including the code.