Google
The website that became a verb. I include Google not as a search engine, but as the ultimate example of what good, simple design can do. The site loads in an instant. It looks clean, professional and uncluttered. Google has left Yahoo, MSN, Lycos and all other search engines in the dust in part by wholeheartedly embracing the concepts promoted by the Stanford Persuasive Technology Lab. google.com
"You understand, we are tied down to a language ...which makes up in obscurity what it lacks in style." from Shakespeare's Hamlet