You've Seen the Commercials

And likely you recognize the tagline "I believe in inventing things that work." These words are spoken by James Dyson, who developed the bagless vacuum cleaner. And I tell you what, I know what he's talking about when he pulls out that dusty, dirty filter from one of his competitor's vacuum cleaners during the commercial. I desperately need a Dyson.

At any rate, if you build it, they will come, apparently. Here is an article about his success.