http://www.imdb.com/title/tt0073600/

1970s movie about 2 couple that go RVing and end up witnessing a satanic murder. The obivous hilarity enues.

I saw this movie when I was a kid and it freaked me out. I watched it again on Netfilx and was surprised at how well it held up. Peter Fonda did a good job and looked cool has hell. Warren Oats and Loreta Swit were a little weak (Warren's character was Frank, which was kind of funny for old MASH fans).

Anyone else see this recently? It looks like there is a remake in the works.