What this film is: Vincent Price, sitting in a chair, explaining who Vlad Tepes was, how Bram Stoker got the idea for Dracula, and how Transylvania views vampires today (and you might be surprised by this). He also shows clips from old films... presumably ones they could show due to being in the public domain.
This is a must-see if you like Vincent Price, because it really is just an hour of him talking, and that voice is priceless. But it is also a decent documentary, and the look inside modern Transylvania was fascinating, as well as the story of the archaeologist who dug up Dracula's tomb. As near as I can tell, this movie is completely factual, which is impressive.