During different presentations at TechReady I saw presenters zooming their screen to show the smaller parts of the window. I taught this was a feature of the beamer and apparently I was wrong. In fact this is done by a tool called ZoomIt which has been written by no one else than Mark Russinovich.
Just assign a hotkey an you can start zooming in and also do some annotation. This tool rocks, now I will finally be able for example to show the details of a windows, message box.. whatever it's on the screen.
Do you want to have this free tool? Go ahead and download it.