Before James Cameron's avatar or Jackass 3D there were the true 3D pioneers, the Nazis.
An aussie film maker named Philippe Mora has discovered 2 30-minute Nazi propaganda films which preceded WWII. Philippe found the films a Berlin Federal Archives. Apparently although the films were in 3D, the Nazis still managed to produce 3D film.
Apparently the films were shot with a prism in front of the two lenses which helped record in 3D. The films were referred to as "raum film" which means space film (fitting huh).
I really hope that there are more of these films for us to find, it would be amazing to watch a film which was in 3D but still not colour.