I saw a demo of this at Tech Ed, but now I found it on MSDN. The Patterns and Practices team has created a sample that covers how you can use Integration patterns effectively.
They did a couple of very cool things with this. First, you can view a flash demo of how it works - that means you can still get all of the benefits of learning the patterns without the pain of installation. The second is how big the real solution is - you can install it across 6 different servers, and it contains 40 projects. Very cool!