Travel Tracker Sports Mate - ttsm

This guy sent me a link the other day.

Travel Tracker Sports Mate
The domain lets you upload a GPX file directly from your GPS unit.
(GPX Visualizer)

Visualization: options like 'playback' and heart rate against time/altitude.

Prove to your mates how fast you did a journey and lets THEM see areas where you slacked it off.

Real-time visualisation
They're publishing a KML visualization of the Alp d'Huze race in France today in real-time to run on the site coincidentally with the racers undertaking the course.

As far as I know, this is an Internet first for real time visualisations.

Here's the link.