Now don't misunderstand....I've gone on record bagging on this whole AJAX thing and how the web browser is a terrible "platform" for all this software we like to run (a windowing environment or even OS in a browser is totally redundant, no?)...but this looks damn fine. I haven't tried a demo or anything, but the movies look quite nice.
Although maybe a bit simple and cryptic, the few examples of full "applications" (if dataflow languages create apps anyway?) being whipped out in a few mere minutes is, to me, pretty impressive. I suspect that [parts of?] it may be Firefox specific, which is probably less than ideal, but again, it looks to work really well!
When I first read about this project, it immediately reminded me of Yahoo Pipes, which has been making the 'rounds. This is like a streamlined, less AOL version of the same...one that (to be fair, without a demo!) seems to actually work well, in an efficient and more intuitive (at least to us patchers) way.