Annotating Powerpoint on the Fly

I recently gave a Powerpoint presentation that included annotated screen shots of an intranet application. Someone in the audience thought I was highlighting the screenshots live, as I was giving the presentation, and asked how I'd done it. That got me to thinking....shouldn't there be a tool out there that WOULD let you highlight, circle or otherwise annotate anything that appears on the screen, whether it's Powerpoint or the Intranet? I looked around a bit, and learned that yes, in fact, there is a utility that will do this called WinPointer.

It's a nice little easy-to-use utility and could be very handy for live presentations. You can also easily create annotated screenshots that can then be inserted into a Powerpoint presentation. I'm glad someone thought of it!