I've been thinking about implementing a sort of slideshow like this.

I could definitely see this being extended, contained within a frame and used (by intercepting and mimicking scroll actions) in order to present a slideshow in a smooth, consistent manner.

By itself, it's novel. But extended, I could see a few uses for it.

Interesting idea, degrades pretty well (for text only), and I enjoyed scrolling through smoothly with middle-click.