http://www.youtube.com/

One of the most visited sites on the Internet, the youtube site has at its core a very simple design. It's a site designed specifically for people to upload and watch streaming videos online. The simple design of the site come's as one of the site's main advantages, where it's main function--the search bar--comes as an extremely efficient tool, since very little else takes attention from it.

You can browse through the most current videos, or the most wildly seen and you have all of these different categories that helps you to pin-point videos of interest. The site has a hierarchy that makes sense, since it shows you movies that would be recommended for you and right bellow the "most popular" section, the spotlights are located on the upper right. The site's main page structure, is mostly composed of videos with their information, number of views and day of its post. When a video is clicked, the information on the video is brought up more thoroughly and there's an option to comment on it--very simple and straight forward.

You feel like most of the space is being used effectively, with very little to deviate the user towards other things not related with youtube. The site simply does what it's supposed to do extremely well.