Until today, I had never even seen the second part; as a kid I wasn’t even sure there was a continuation.
But the second part did exist, with Cyndi taken prisoner by the pi-restlers and the Goonies lip syncing their theme song.
The video for the immortal Ghostbusters theme song features cameos from actors who aren’t even in the film, including Chevy Chase, Danny DeVito, and John Candy.
Ally Sheedy appears in character, but I guess Steve Gutenberg had better things to do; he only shows up in cardboard cutout form.