I've just finished watching John Carpenters They Live. I loved it. I purposely didn't read the synopsis and the film got mentioned by someone the other day so I thought I'd check it out. Plot was really original and I was just generally engrossed the whole way through.
Will definitely be buying a copy on DVD, maybe even Blu-Ray. I'll see what the prices are like.
If you haven't seen it yet do check it out, it's good fun