I just watched Encounter at Farpoint last night (it's on Space daily). In part one, when Picard, Data, Troi, and Yar are in Q's courtroom and Picard speaks in close-ups, there is a weird dark shadow at the top of the screen. It's like you're squinting your eyes as you look at him. In other shots of the crowd, Q, etc. this heavy black blur is not present. I've always wondered what that is at the top of the screen. It even covers the top of Picard's head like a defect in the film. Am I nuts?