Doctor Who (in the Tom Baker days) used to give me nightmares as a kid.
The one where the spiders come out of melons and attack people.
An the worst was the egg thing that's found frozen in the Arctic, it thaws out and turns into a great huge tentacled monster that grows bigger than the house and sends its tentacles in through the doors windows an pipes.
That gave me recurrent night terrors, so bad i wouldn't pick up my baby sister because I was terrified the tentacles were going to explode out of her baby-grow and get me!
My parents stopped me watching it after that
