Tale of Tales (Russian: Ска́зка ска́зок, Skazka skazok) is a 1979 Soviet animated film directed by Yuriy Norshteyn and produced by the Soyuzmultfilm studio in Moscow. It has won numerous awards, and has been acclaimed by critics and other animators as the greatest animated film of all time. (Source)
First 10 minutes of the film.
Yuriy Norshteyn talks about Tale of Tales, art, and technology in his films.