Etsy.com has a navigation system with many innovative options for finding products listed on the site. While it has the usual list of product categories, such as "Candles" or "Quilts", it also allows for more right-brained/creative searches by color, user-created and compiled themes (such as "grass" or "hamburger" related items), or by geographical location.

Not to mention most of the search option interfaces are completely mesmerizing.

Michelinman.com attempts a similarly creative navigation. To learn about how Michelin is doing its part to save the environment, users must travel to the amazing 3d online compound of the Michelin men and search around buildings for more information. This makes the interface fun, and the 3d work is amazingly done but it's still overkill when they only have information about tires.