It's even better if it's a business pitch rather than a technology demo. The world's best sales pitch is always being able to say, "If I push this button then your phone is going to ring 150 times in the next 3 minutes with people who want to buy your product, want to see?"

That's how you get to charge 150K per client per year, and that's why DailyCandy and the like are worth so much.