The Wicker Man! It's a freaking masterpiece, totally chilling. I haven't seen the remake: why bother when the original is so terrifying? I love British horror movies from that era: my folks are huge movie buffs and have a massive collection of films, including a lot of that Gothic/folksy horror that came out of GB in the 60s and 70s: lots of Hammer horror, like The Witchfinder General, Quatermass and the Pit, She… it's such a shame there is a whole generation who haven't seen them! ;-)