I have only ever seen it once. It was about 12 years ago, and it was on TBS or something at 4am. The best part was the people who live in the cabin, the husband did all the talking of the encounter his WIFE had with Bigfoot. The stick figure with big pointed teeth that she provided as a description of the Beast is hilarious. Once you get past laughing at most of the people who they interview, it really is pretty interesting. It was made in the early 70's, and the scientific side of it is pretty solid. Especially for being made as long ago as it was. An absolute must see for anyone, if you can find it to watch. It hasn't been on for a long time, and I don't believe you can buy it anywhere.