Three-dimensional moving pictures -- a big deal in the 1950s, a big deal again recently and a big deal in 1861.
Meet the kinematoscope: a series of stereopticon slides displaying chronologically successive images, viewed by peering into an eyepiece. In many way, it presages Mr. Edison's (2-D!) kinetoscope by thirty years, though with much shorter playing times and less-smooth motion.
And for the fellow proud of his high-definition 3DTV, I'll point out the 19th-centry sterograph camera is a good match to 1080p for resolution, perhaps better. But take heart, you've got color!