Screenshots of Cylon's User Interface
GpsViewer for finding, averaging, and plotting course waypoints (click to enlarge)
CylonUI for viewing the current state and telemetry of the robot while it is in operation:
Uh, obviously I'm an API developer, not a UI guy. My design skills are a bit, ah, primitive.
One cool thing I did with GpsViewer is use the Tablet PC SDK to ink-enable the app. You can draw on the course image with the waypoints to either point out obstacles or help debate course strategies with your team members, and I use an Ink enabled textbox to allow you to lable the Gps waypoints using your handwriting as you walk about the course so you don't have to try and type description into a keyboard while walking.