Bill Scott, former Director of UI Engineering at Netflix, on the 23:10 mark:

A lot of people think Netflix is better than it is, is what I would always say. Because they get a movie recommend to them, they like the movie, and they have a great experience with the movie, and they transfer that love back to the site. And if you can create a service like that, it’s golden. Because all you really do is to get out of the way.

Think about the invoicing application when you see much money you’ve earned, or Google Analytics when your site goes viral. Great, positive content often equals a great user experience. As software designers, we should be more aware of that, and try to highlight the positive content in our apps that make people happy.