A while back I saw a piece of software you can install that would track what windows you had open. Every week, the software would compile a list of what software you had open and how much time you spent in it. I think it even included tabs in Internet Explorer / Chrome / Firefox.
From here you could break down if you spend most of your time in your productivity tools (for me, Visual Studio) or most of your time on Stack Exchange websites. ;)
Anyone seen this? I need this to analyze my daily computer usage...