Check out the tour tracker with live video streaming of the stage and commentary, GPS mapping, running text commentary highlighting events with in the peleton, stage profiles, twitter discussion, stage replays and at your fingertips.
The map and live profile are great for getting a sense of where the really is in the world and the real distances being covered and how big the breakaway gaps physically are. TIP: flick the background to satellite for a great view of the race
If you have a laptop makes a good companion on the lonely tour couch. Click here to launch
Another companion I can recommend on your tour couch: