 He played in addition the role of Prof. Bressler in the movie "Unknown" (with Liam Neeson and Diane Kruger) under the direction of Jaume Collet-Serra.In the summer of 2010 he took a guest role alongside Eva Green and Joseph Fiennes in the TV series "Camelot" from the Irish RT Film production, followed by the UFA production "Bella Block" - Stich ins Herz under the direction of Stephan Wagner, in which Koch played the role of Max Klöckner.As a host of the ZDF production "Terra X", Koch presented the Cologne Cathedral, the Neuschwanstein Castle and the Dresden Frauenkirche.