The beauty of attracting smart people to the comments section of Macdrifter.com is that they write smart things.
ZoomNotes is a sketching app. Its unique feature is a virtually unlimited level of zoom, but with a couple twists. Rather than drawing with a super-magnified line when zoomed in, the line autoscales with the zoom level. ZoomNotes is nice for drawing details, but it's even better for creating interesting slide shows with a single ZoomNotes page.
ZoomNotes is a good example of why trying to mimic analog tools is a waste of the technology. The ludicrous level of zoom in ZoomNotes feels like it's out of Blade Runner. It's something completely impossible with real paper and pen. While ZoomNotes isn't that attractive, it is still impressive.
It's easier to demonstrate ZoomNotes than it is to talk about. I put together a little demo video (with music and everything).
You can find the video here or watch the embed below.