I totaly recomend you to watch the movie elephants deream. Its the first open source movie ever. Its totaly CGI. looks really great and stuffs.
But i think the world the movie takes place in resembels a dream verry much. Its really as unreal as it gets. The story is verry “sublime” and rather hard to fully understand. But i recomend it. Its a really beautiful movie. Some of the scenes in this movie are like… nothing i have ever seen in a movie.
You can get it at https://www.elephantsdream.org (Notice that the new web page is under construction and moderatley unstabel)