Write a program to test Fitts' Law. Your program should time a collection of targetting tasks, where the distance moved and the target size varies. Plot the results and evaluate how well your results correspond to Fitts' law.
I suspect that you will see the strongest correspondence with Fitts' law if the target width is small - if the target width is large then then the movement cost will dominate.
You may use whatever platform you want for the test. If the Tablet PC SDK is convenient for you to use, it would be interesting to experiment with this on the tablet - however, if you are not familiar with Visual Studio, it is probably not worth doing this for the Tablet.