Dick Termes creates unique art by painting spherical illusions using 6 point perspective. He paints the outside of a sphere in such a way that when it spins, and you look into the center of the painting, it appears as if you are inside the painting. Here is one of the inside of a house:
You will know you are looking at it correctly when it appears you are inside the room, and the room is spinning in the opposite direction.
Very cool artistic technique.