Woven Portraits by David Samuel Stern. (layers of portrait woven over each other)
Trailing points from sample positions inside a volumetric vector field (Christoph Bader Bad Wurzach, Germany)
Most lenticular prints fall into one of two categories. Static prints convey depth but not movement, animated prints the inverse.
Photoshop just crashed and did something super weird to all the files I had open at the time.