A great new media technique, I agree. However, I do not own an iPod, as I prefer other media devices like the iRiver products. The technology of the podcast should become a standard, in that case. You can even deliver instant reviews to the makers, where they can determine the quality behind their work.
It's just like the popularity of RSS on sites and email accessable via phones: The information is spread faster through updating. And, as you mentioned, film producers can now publish work without any hinderance between them and the customer. Everything is growing toward this "more & faster" ideal in general, it seems.