Its is a program for Mac, Linux and recently went into alpha for windows. with it you can watch your movies, TV shows, music and photos, as well as streaming content from websites like Netflix, CBS, Comedy Central, Last.fm, and flickr, it also has a pretty nice interface design heh
Site: http://www.boxee.tv/
If you have an cool programs please share them :P
Really sorry for the frekin large images :)