How many movies have Jim Mallon and Kevin Murphy collaborated on?

They have worked on 31 movies together! Their first movie together was Mystery Science Theater 3000: Revenge of the Mysterons from Mars (1988) while their highest rated movie together was Mystery Science Theater 3000: Manos: The Hands of Fate (1993). They have not worked together since Return to Eden Prairie: 25 Years of Mystery Science Theater 3000 (2013). They are most known for their science fiction films together.