Answer: Possibly as a joke or out of admiration.
Explanation: Many people incorporate Classic art into jokes as a comical stance, many other people do it as admiration. If you admired a piece of art work it wouldn't be much of a surprise if you tried to recreate it.
Answer: As warm air rises near the Equator, for instance, it flows toward the poles. In the Northern Hemisphere, these warm air currents are deflected to the right (east) as they move northward.
Because you have to do frame by frame movements and depending on how smooth you want your animation to be would depend on how many frames are required.
