My cohort, Dan Sullivan, has released the Service Broker Explorer on his Service Broker Developer's Spot website. It a graphic user interface for Service Broker that has some “topology map” features and configuration features and some management features for Service Broker objects. According to Dan:

“It lets you drill into Sevice Broker and add and control elements of Service Broker with a GUI. It's just meant for use to learn about Service Broker, it is not for use in a production system.“

Version 1 of what promises to be a very cool utility.