How many movies have I. Winkler and Thomas S. Allan collaborated on?

They have worked on 3 movies together! Their first movie together was Junge Debütantinnen 19: Deutsche Debütantinnen - Hart & Herzlich (2001) while their highest rated movie together was Die Behandlung (2008). They have not worked together since 33 cm! Das Monster im Arsch (2009).