Check out this IT dashboard that tracks US Government's federal IT spending. This is an amazing tool. It is simple, it is elegant and it gives the information you want pictorially.
The beauty of this dashboard is in its simplicity. While it is information heavy yet the dashboard loads pretty quickly.
The main page - IT Dashboard
Don't miss the tree map view here. I like this feature the best.
Finally, for the more analytical mind - Check out the FAQs - IT Manager's can think of tracking the ROI on IT project expenditure in their organizations based on some of the ideas from here.
Hat tip - Prabal, my colleague, told me about this site.