The incredible Jensen Harris gives you all the details on how to use Fitt’s Law to improve the user interface of your application in the post Giving You Fitts.
The article gives you a good insight on how to create a great interface using a mathematical approach instead of just lettting a art/creative director making the job. It explains why the northwest corner (as Jensen told us it should be named) has changed so dramatically.
Can’t wait to get my hands on the technical refresh of Office 2007 beta…