Ooh nifty thread!
When I was little I was really into Bigfoot. I think it was the episode of The Bionic Woman that did it for me.
Of course when I was six years old I got in big trouble for convincing the Brownie troop leader's daughter that Bigfoot was in the woods outside our camp. We were camping in a park. Poor kid was gullible, and I apparently had no conscience at the time.
I do now, I wonder how that happened?