With all due respect to the aforementioned people, but personall I think the real rockstars are the leading designers behind sites like Yahoo, Amazon, CNN, BBC and digg's Daniel Burka. Designing for such a large audience while still keeping an eye on a company's goals and vision is what really is impressive. Making something look good is the easy part -- making it work flawlessly in an pre-existing environment with an incrediblyt large audience is the challenge.