How to Write a Better Podcast

I'm fixing my office, or at least one end of it, to act as a TV studio. I've got new chairs coming, nice new bookshelves, a backdrop. Very funky new color, wicked lights, and meaningful money in massive letters,. Not each letter, the whole thing. So you know, I think it's going to be pretty cool. But what can the written word do that audio and video can't? Well, not a lot, except maybe deal with more sort of thought-provoking pieces rather than fact-based how-to stuff.