How many movies have Conor Lastowka and David D. Martin collaborated on?

They have worked on 3 movies together! Their first movie together was RiffTrax Live: House on Haunted Hill (2010) while their highest rated movie together was RiffTrax Live: "Manos" the Hands of Fate (2012). They have not worked together since RiffTrax Live: MST3K Reunion (2016). They are most known for their comedy films together.