How many movies have Hans Billian and Tracy Laque collaborated on?

They have worked on 2 movies together! Their first movie together was Familie Immerscharf 6 - Die Sex-Lawine (1996) while their highest rated movie together was Familie Immerscharf 7 - Nachtisch bei den Immerscharfs (1996). They have not worked together since Familie Immerscharf 7 - Nachtisch bei den Immerscharfs (1996).