Little did we know however, that Mars Attacks had encountered the Ghostbusters franchise as early as 1996.
A few folks here might know that Tim Burton utilised some stock footage of panicking crowds during the sequence showing the martians destroying several famous landmarks around the world (mostly from the 1976 remake of King Kong), but this little snippet, just before they start levelling London looked a bit familiar:
It's not immediately obvious, but take note of the white structure which dominates the top-right corner of the shot. Now watch this:
-The shot rather stands out as stock footage due to all the winter gear the people are wearing. Combine that with the darkness, and what I believe to be a late 80's model New York taxi disappearing off of the right-hand side of the screen, I think the two shots can be linked together - with the Mars Attacks! section being a earlier part of the reel of the Washington Square ghost sequence of Ghostbusters II's "Flip City" montage.