I've recently taken some courses which are video and/or audio podcasts and I couldn't be happier.
It's been great to be able to listen to the lessons as many times as it takes to soak through my thick head.
The one criticism I've had of these podcasts is, after the creators work very hard to make these as informative and as clear as possible, many times, the file names will be something that make it difficult to find or search for.
I don't know about the rest of you guys, but in a normal day, I might download 10-20 files (more if I'm checking the spec's of some component). And I have a ton of media players (18 the last time I counted). So having a filename that is informative is very important IMHO.
I know that I should rename these files as soon as I un-zip them but lots of times, I don't.
So going back to hear them again can be a real chore or sometimes they'll get trashed along with datasheets for 5kV capacitors.
So, I think that the podcasts are a great idea. I've learned a ton of stuff by using them and I wish someone would do a great series on DIY audio. Of course, I wouldn't expect a series like that to be free.
For the Q&A, maybe something with you and Eileen just like "In the Studio with Rene and Romo"!