Grease
This film was super normal and realistic. Sandy and Danny were teenagers who fell in love and sang songs. The ending, though, is what threw people off. For some reason, their car flew off into the sky. Despite all of the theories, the filmmakers have said that it was just a bad editing idea. It sure was!
Pi
Max Cohen is a logical thinker who believes that everything can be solved by using numbers. He spends his lifetime making stock predictions but ends up suffering from headaches and hallucinations. He's driven to complete madness and performs a lobotomy on himself to end the pain.