This interview of Bruce Wagner is absolutely fantastic (warning: it is long).
It's also very one sided IMHO, I couldn't help thinking 'ponzi scheme!' while watching this. Bruce is almost exclusively focused on the (expected) appreciating value instead of utility and although Stefan mentions they're also going to talk about the downsides later on that never happens (don't you just hate when people state they'll come back to something later and they invariably don't?). Bruce also seems quite distracted in places, maybe he was watching the appreciation not happening?
We really need more balanced evangelism, the Bitcoin economy is helped a lot more by slowly and steadily growing with awareness of its weaknesses than by exponential hysteria causing a bubble that will wreck the whole thing when it comes crashing down.