I saw that with some friends at the drive in when it came out. Only saw it once (That was enough). What a sicko movie. I believe it was that movie that had a scene where a guy asks a girl if she wants to see his knife and proceeds to cut off her fingers? OMG!!
Btw, the other feature was just as bad, but not as known as Maniacs was "Color Me Blood Red." That'll give you a clue. Even my 60s standards both cheesy films.
Also I think from that time period (maybe a little later) I remember seeing "Last House On The Left." Again, cheesy/creepy and only saw it once. I see a newer version and assume it's a remake?
TIS
"Mankind must put an end to war before war puts an end to mankind. War will exist until that distant day when the conscientious objector enjoys the same reputation and prestige that the warrior does today." JFK