If you teach a Marketing class, an Apple Television commercial should be included on the first day.
An important part of Marketing is educating the potential consumer. Good Marketing shows exactly why the consumer should purchase your product or service. The consumer won't consider purchasing if they don't know how the service works. That's where Marketing education comes in.
And this is where Apple is clearly the best. Oh, and they do this without using the spoken word. Time and time again.
This iCloud commercial is a perfect example. Many consumers are confused about what Cloud Computing is, and why they need it. This commercial does a perfect job of explaining both in just 30 seconds.