Re: Genre-crossover nightmares
Now that I see it, I'm actually surprised Toho never tried to do this back in the day. The closest they ever got was when Ghidorah the Three-Headed Monster got released on a double feature in America with an Elvis flick -- Harum Scarum, I think it was.
This was around Thanksgiving, and the ad campaign ran to the tune of, "The Beat and the Beast for a holiday feast!"
No, I'm not that old, I got it off the commentary on the Ghidorah DVD.