Credits

• 2020 · The Hidden Life of Trees as Self
• 2018 · Der mit dem Wald spricht as Self - Host
• 2017 · Intelligent Trees as Himself
• 2017 · La vita segreta degli alberi as
• 2016 · NDR Kultur – Das Journal as Self
• 2013 · Lesenswert as Self
• 2012 · Precht as Self
• 2008 · Markus Lanz as Self
• 2007 · Der Sonntags-Stammtisch as Self
• 2003 · Menschen bei Maischberger as Self
• 2001 · Hart aber fair as Self
• 1997 · Im Dialog as self
• 1995 · Kulturzeit as self
• 1991 · DAS! as Self
• 1991 · DAS! as
• 1989 · ZDF-Mittagsmagazin as Self
• 1979 · NDR Talk Show as Self
• 1976 · Kölner Treff as Self