One of the coolest toys on my N95 is definitely Sports Tracker.
It's not part of the standard applications shipped with your shiny new N95. You need to download and install the app first at Nokia's Research and Beta pages. It actually works on all recent Nokia smartphones like the N-series and the E-series. However, you need GPS, be it built-in or an additional bluetooth GPS device.

A short description of what this app does ripped from the Nokia site:
"Nokia Sports Tracker is a GPS based activity tracker that runs on S60 smartphones. Information such as speed, distance and time are automatically stored to your training diary. To be able to use application for real, you need Nokia S60 3.0 or 3.1 phone with Bluetooth GPS device or Nokia S60 3.0 or 3.1 phone with integrated GPS."

So, it basically collects all sorts of data during your training session. The greatest part is that you can keep track of the route you traveled and upload it to Google Maps or Google Earth afterwards.
Here is the map I made a few days ago. It displays the route I cycled at that time.

After my cycling trip I exported the data from Sports Tracker to a KML file and I uploaded this KML file to my web site.

Finally to actually view the data in a map, I found three ways of doing this.
1) Paste the link to your uploaded KML file into this site www.takitwithme.com,
2) Paste the link to your uploaded KML file into the search bar on the Google Maps site, or
3) Simply open the KML file in Google Earth. Ofcourse you need to have Google Earth installed on your computer to do this.

The first way - www.takitwithme.com - enabled me to embed the map into this blog.
The second way, Google Maps, shows more information, like the time you traveled and the average speed, but I couldn't get this map embedded in this page.
Finally, the third option with Google Earth will show you even more information that is hidden in the KML file. Google Maps actually doesn't fully support all the KML features but Google Earth does.

Some other ways you might make this wonderful app useful.
Next time you get lost - despite the fact that you have GPS, you can track where it went wrong on the map.
It's called Sports Tracker, but you don't need to be active, the tracking feature also works in the comfort of your car!
Instead of using the instruments in your car to track speed and distance, you can stick your telephone to your car's dash-board and use Sports Tracker!

If you've found some other uses, feel free to drop them in the comments below.

source: Nokia Sports Tracker