I think Ghostbusters 2 was a pretty darn good sequel. It had all the characters from the previous film, but rather than centre around Zuul, its main baddie this time was a painting.
This painting, (and a pretty darn scary painting it was,) had the power to control people, and was intent on killing Dana Barrett's child.
Highlights from the film were when the Ghostbusters were digging up the road without permission from anyone, and when they gave the good vibes to the Statue of Liberty.
Do You Remember Ghostbusters II?
Do You Remember Ghostbusters II?