Using S5 and Movable Type for slideshows

Less than two weeks ago, Eric Meyer published a smart slideshow system he calls S⁵ for Simple Standards-Based Slide Show System. It didn't take long for Anil Dash to produce a S5 Movable Type template that builds on it to use MT for slideshows. The published template turns an entire weblog into a single slideshow with each post being a slide. It would be interesting to tweak it to host several slideshows into one weblog, for example by using categories or some other way (one could think of entering an entire presentation within a single post instead of one post per slide).