Looking for more advanced tutorial

Have been going through this tutorial the past week or 2 and I have all of the main points under my belt now
http://static.springsource.org/docs/Spring-MVC-step-by-step/
Can anyone recommend a more advanced example now? I have looked at the sample apps that ship with Spring but I'm not getting any benefit from then as I find them too complex for the moment so something in between would be better.

Thanks ... J