Several years ago I wrote about the virtues of Keynote as a prototyping tool. In a nutshell: it’s fast, it doesn’t require code writing, and you can turn it into flash and present it over the web.

This week I was shocked with the inventive but pragmatic application of Keynote as a prototyping tool for iPad. See Amir Khella here using Keynote to prototype a realistic iPad application, and (if you skip ahead in the video) run it on the iPad:

Here’s more about how he did it.

Such a good way to test out your concepts fast. Thanks Amir for sharing your good idea!