What I'd like to hear is a really good example of a contract where Ethereum would be an obvious improvement on doing the same thing without Ethereum. The examples I've seen so far seem to work as long as nothing is disputed by the parties, and then either default to favouring one party or other, or fall back to human adjudication. Which doesn't seem particularly better than what we can do without Ethereum.

However it does look cool and I'm open to the idea it makes sense somewhere, but I'd be interested to know where that somewhere is.