None whatsoever. Ray once wandered into the universe of the Real Ghostbusters cartoon during the episode where they were filming the Ghostbusters movie- the live action movie, despite being in a cartoon universe. He had a front row seat to the Radio City Music Hall premiere.

... no, seriously, there was a whole cartoon episode that centered around filming the movie. It was 'based on a true story' in the cartoon 'verse, though, rather than fiction.