Klemens can currently be seen on British television in National Geographic's docudrama series Nazi Megastructures: Russia's War in the role of Gottlob Bidermann (one of the main characters) in the episode Blitzkrieg in the East. In addition to playing the character on screen, Klemens also narrated Gottlob's extensive diary voiceovers and he voiced the roles of "Lead Plane" and "Junkers Rear Gunner" in the episode, too.
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Currently airing on TV in Germany - the new SelectSpecs Commercial with Klemens as Presenter/Optician
The video game Sniper Elite 4, in which Klemens voiced British (SOE Agent Harry Hawker) and German characters (Andreas Kessler, Viktor Habermann and others) was nominated for a BAFTA award in the "Best British Game" category.
"Captain Harry Hawker"
"Professor Andreas Kessler"
"Propaganda Minister Viktor Habermann"