Based on Charles Addams' cartoon characters, 'The Addams Family' ran on ABC from 1964-66. "The series producer Nat Perrin was a close friend of Groucho Marx and writer of several Marx Brothers films. Perrin created story ideas, directed one episode, and rewrote every script. Much of the dialog is his (albeit uncredited). As a result, Gomez, with his sardonic remarks and ever-present cigar, has been frequently compared to Groucho Marx."
The Addams Family aired during the The show focused on the rather unconventional Addams family. It raised questions of what was "normal" and presented a mother figure, Morticia, who held just as much authority as her husband Gomez.
The Addams Family (movie version, though the TV series came first). Other films that would make good Hallowe'en costumes because they're famous, though not really "fashion": The Munsters (similarly, a TV show first), scI-fi (Barbarella, Star Trek, Star Wars, The Rocky Horror Picture Show), fantasy (Mary Poppins, any Disney animation), Rocky, Shaft, Tom Cruise in "Risky Business", Men in Black.