I've been hiding Prezi in my power points lately (actually the other way around). I make them look like the normal humdrum ppt and then flip a zoom or pan/rotate in and my audience registers that something just happened but they can't figure it out because I fake to the next slide which looks like ppt. I love recursives and vectors. If you haven't checked out Prezi and you are forced to 'create' in ppt, you should