The echo_cherrypy_server example provides a simple Echo server. It requires CherryPy 3.2.3. Open a couple of tabs pointing at http://localhost:9000 and chat around.
The droid_sensor_cherrypy_server broadcasts sensor metrics to clients. Point your browser to http://localhost:9000 Then run the droid_sensor module from your Android device using SL4A.
A screenshot of what this renders to can be found here.
You will find a lovely video of this demo in action on YouTube thanks to Mat Bettinson for this.