In the early days of the web, browsers were quite simple animals that only offered a basic means of conveying information like text and pictures. As browsers evolved, animation techniques allowed designers to incorporate more complex executions within their design ideas. The interesting part of the equation is that, while the web is the newest of all current media, it is evolving the fastest. But in the midst of its evolution, it still holds true to its roots of requiring simple navigation schemes for the highest degree of functionality. We see magazines borrowing some of these design elements as well as handheld devices like PDAs, cell phones, and remote controls.
Interface design works best when it's intuitive and easy to use.
Take notice of how things are being re-designed today. Good design is a beautiful thing, but re-design is a form of art.