The creature or "Brain" if you will, was entertaining at times due to its cheesy effects and utter ridiculousness, but that only provides momentary joy. Many of the characters were quite dull and boring at times. Effects are okay but I would have preferred a more gorier or gooey experience.
Did you enjoy The Brain?
(http://www.fight-evil.com/movies/years/1988/433-1.jpg)
Jigsaw and I recently discussed this movie: