How many movies have Fred Myrow and Susan Tyrrell collaborated on?

They have worked on 3 movies together! Their first movie together was The Steagle (1971) while their highest rated movie together was What's Up, Hideous Sun Demon (1983). They have not worked together since Susan Tyrrell: My Rotten Life, a Bitter Operetta (1992). They are most known for their comedy films together.