Craig McMurtry released the code for his Live Service Trace Viewer on his blog today. Live Service Trace Viewer is a tool that alows you to view trace information between WCF nodes. The trace information is provided in a visual/WPF view. You can read more about this tool and download the code from here. There's also a new video on Channel9 where Craig gives a demo of the tool
BTW, if you want to work on cool stuff like this... I'm hiring.