My favorite horror movies have to be the oldies... I love anything Vincent Price, although I love the new movies such as Underworld and would someday really love to be in -- or create -- something similar. As far as newer horror, My Evil Twin took me to see the play Ghost Stories at the theater. I was blown away with the thought that has gone into that performance... very clever story line. I will say no more, as you really need to check it out next time you are in London.