Basset Software has released Slide Runner for Keynote. Slide Runner is a little app that adds flipbook style animations to keynote presentations, to graphically give the audience an idea of how long a presentation is.
Instead of manually numbering your slides (and, of course, including the total number so you know how far through the presentation you are), you can use Slide Runner to add on simple little animations to each slide. The audience is then treated to a man running across the screen, or a balloon floating to the top and then popping. You can also use it to generate simple numbering.
Once you’re finished with your presentation, you simply save it, close it, run it through Slide Runner and let it to its thing. Your numbering or animation will be added to each slide accordingly.
Only $0.99 in the Mac App Store.
For more info, and a watermarked demo visit http://www.bassetsoftware.com/sliderunner/