Nice one Bart,
I read a quote elsewhere that said DRM is the equivalent of a drunk security guard, it annoys the hell out of the paying customers while the shoplifters just laugh at it and walk out with all their shoplifted goods.

One model that you didn't mention is a subscription based model. i.e. If I pay $25 per month, I can download all the NBC programs, or I can listen to as much Polygram music as I like.