How many movies have Frank Conniff and Joel Hodgson collaborated on?

They have worked on 15 movies together! Their first movie together was Mystery Science Theater 3000: Santa Claus Conquers the Martians (1991) while their highest rated movie together was RiffTrax Live: MST3K Reunion (2016). They have not worked together since Cinematic Titanic: The Astral Factor (2016). They are most known for their comedy films together.