Not strictly AIBU I know but this is driving me crazy. Ok - old film. Possibly black and white, part of a trilogy I think. I think it may have been done as a Simpsons copy much later (as a trilogy). It's someone in an art gallery with a spooky weird curator chap. The curator asks what the viewer (man) thinks of the painting. The man says he likes it but it would have been better if the top window was lit. Man then finds himself inside painting. After a bit of story (can't recall) the man is handed a lantern and told to stand in the top window (thus it now lit). A new man comes to see the painting in the art gallery, (window is now lit by former chap) and the spooky curator asks if he likes it. The chap says, yes but..... and you know that whatever he criticises he will find himself remedying for eternity inside the painting. Does anyone know what this actually is - I saw it about 30 years ago (but it was old then) and periodically i google but I can never find out what it was....