thebobo you just reminded me of Willy Wonka now...stuff of nightmares.
watership down.
The Black Hole was also plenty creepy for my age.
funny story: i was scared witless by the kitchen scene in Gremlins, so much so that i had to walk out of the theater.
i was never really into horror, although i did like Dawn Of the Dead, i never found it scary. my first real impact with HORROR, was reading the collected works of Lovecraft, at circa 13yo.
Creature From The Black Lagoon. I was three or four. Didn't give me nightmares, but I remember being concerned with the curtains in the family room of the house. For some reason, I had the idea the creature would emerge from behind them :^D