How many movies have Eckhard Preuß and Markus Knüfken acted in together?

They have worked on 2 movies together! Their first movie together was Double Pack (2000) while their highest rated movie together was Dora Heldt: Bei Hitze ist es wenigstens nicht kalt (2012). They have not worked together since Dora Heldt: Bei Hitze ist es wenigstens nicht kalt (2012).