Jan-Willem Wirtz Jan-Willem Wirtz (1974) graduated from the Utrecht Academy of Arts. In 1996 he founded the production company The Format Company with Piet-Harm Sterk and moved on as a producer at Stetz.Mimoun (2013) Producer View > Kort! - Kansloos (2012) Producer View > Oom Henk (2012) Producer View > Vlotter (2010) Producer View > Sekjoeritie (2010) Producer View > Op z'n Hollands (2009) Producer View > Broken English Spoken Here (2009) Producer View > De zwaan (1998)View > Janeck (1998) Producer View > Een ervaren debutant (1998) Montage, Director, Script View >