"Cloaca" is a Dutch theatre play/film that has this idea of being able to spot real talent as one of the starting points of the story. One of the main charact

"Cloaca" is a Dutch theatre play/film that has this idea of being able to spot real talent as one of the starting points of the story. One of the main characters is an art historian and archivist at a municipality with this ability. Ignored by his superiors, they keep him happy by letting him pick out one painting from the depot in the basement every year for his birthday. Due to his ability he knows which paintings are truly good among all the kitsch. Then one painter suddenly gets world-famous after his death, and eight of his "worthless" paintings he had are suddenly worth millions. Then his boss demands that he hands over the paintings again, accusing him of stealing from the municipality. This is the start of the film. I highly recommend it, even it's not really about this but it's a really good character study.