Coming at the end of the cycle of the Universal Monsters horror films, and before the Golden Age of sci-fi films, House of Dracula is more science fiction than horror and incorporates some of the more cheesy {read:enjoyable} elements which would come to typify the sci-fi films of the coming era. Lon Chaney Jr. plays the Wolf Man, and John Carradine, Dracula and Glenn Strange, the Frankenstein monster.

A mad scientist sets out to "cure" both monsters of their "sicknesses" by means of modern {read:mad} science. When the scientist's beautiful nurse-assistant is revealed to be a hunchback early in the film, the viewer is thereby alerted to the fact this film is not going to be typical Universal fare; this film foreshadows the kind of sleazy exploitation we would come to take for granted in 1950's sci-fi.

If you don't mind the slower pacing of the older films and black & white does not throw you off, this film is recommended viewing. Afaik, this one is not currently available on DVD, but AMC airs it occasionally, so keep a lookout, or you could always wishlist it on your TiVo!