"Can two straight lines make 3D possible?"
Below GIFs are quickly spreading throughout the SNS, starting with Tumblr, as they demonstrate how the 3D effect can be achieved without having to use those clunky 3D glasses.
Simply by drawing a couple of lines through what is a flat screen, one can achieve the illusion of viewing a movie (or at least a short clip) in 3D.
So here are 12 3D movie clips that you won't have to have your 3D glasses for to watch.
[All GIFs from tumbler]