The other day I thought I'd rewatch Disney's The Black Hole which I vaguely remember watching as a kid. After about 5 minutes I decided enough was enough. Unwatchable...apart from the soundtrack which made me think, for a moment, that I'd accidentally started watching a Bond movie. So good it costs >$150 to buy on CD.
@dpiponi I watched this when I was like 7 and I was so scared I had to leave the room.
@glaebhoerl One thing I remember from when I first watched it was a very violent scene - probably the most violent thing I'd seen in a movie at that age. It happened just off screen but the implication was pretty far out there for Disney.