How many movies have Gerhard Schirlo and Rick Kavanian collaborated on?

They have worked on 6 movies together! Their first movie together was Hui Buh: The Castle Ghost (2006) while their highest rated movie together was Abi '97 - gefühlt wie damals (2017). They have not worked together since Hui Buh and the Witch's Castle (2022). They are most known for their comedy films together.