Encyclopedia of Science Fiction -Award winning online sci fi resource. Contains nearly 15,000 entries. Search by genre or specific monster. Includes lists of authors and film makers with respective works.
The Internet Archive : SciFi / Horror Films -Free to view science fiction and horror films (mainly older movies): "monsters and aliens, space and time travel, experiments gone wrong, unimagined disasters." Includes Nosferatu (1922); Night of the Living Dead (1968); White Zombie (1932); Frankenstein (1910 and 1974)