The correspondence problem: multiple possibilities for matching the inputs to the 2 eyes.
Do the faces blend, and become more attractive?!
Responses of a disparity-selective neuron.
Distribution of disparity tunings of neurons.
Another version of the Shepard tables illusion.

Failure of shape constancy on the poster behind, but not for the "real" Nixon.
Chinese and Japanese portayal of depth.
Emphasis on linear perspective during the Western Renaissance.