I've never been a fan of the "Tales From the Crypt" franchise, but the spinoff film "Demon Knight" is a great little B-movie. The story is surprisingly inventive, the acting is appropriately hammy, and the film features a wonderful prop, the Blood Key, as a major plot point. It's one of the most interesting occult artifacts ever created. Derek Marsh of Oblivion FX was commissioned to create a reproduction of the Key, and he documented the entire process. The final result is a beautiful piece of work.