I just have to mention the awesome ZoomIt presentation tool created by the legendary Mark Russinovich.
This is great for doing presentations and technical demonstrations, it lets you:
– Draw anywhere on the screen
– Zoom in to parts of the screen
– Type anywhere on the screen
So if I was looking at the new AD Administrative Center, I could just draw on the screen in real time by pressing Ctrl-2 and entering drawing mode:
Kudos to Mark, go download it here:
http://technet.microsoft.com/en-gb/sysinternals/bb897434.aspx