After reading this thread I decided to watch this film this afternoon and I really enjoyed it too. The theatre setting is certainly claustrophobic and the mask worn by the killer certainly gave me the creeps, in fact it could be the creepiest mask I have ever seen used in a horror/thriller. Will definitely revisit this one soon and would be very interested in seeing a widescreen version even though I found the DVD-R of the Greek tape to be of surprisingly good quality.