| Movie | Sörensen Catches Fire | 2023-09-30 | |
| Series | Terra X - Die großen Fragen | Self - Moderator | 2023-04-16 |
| Series | Lesch sieht Schwartz | Self | 2022-06-16 |
| Series | Unsere Kontinente | Unknown | 2022-10-16 |
| Series | MaiThink X – Die Show | Self | 2021-10-24 |
| Series | Die große Terra X-Show | Self | 2019-11-20 |
| Series | phoenix persönlich | Self | 2018-06-08 |
| Series | Terra X - Ungelöste Fälle der Archäologie | Moderator | 2018-03-25 |
| Series | Falk | Self | 2018-05-10 |
| Series | Der große Anfang: 500 Jahre Reformation | Moderator | 2017-04-14 |
| Series | Ringlstetter | self | 2016-12-01 |
| Series | Ein Fall für Lesch und Steffens | Self | 2015-06-14 |
| Series | Leschs Lexikon | Moderator | 2015-03-27 |
| Movie | Die Welt In 100 Jahren | Sprecher | 2015-09-15 |
| Series | Leschs Kosmos | Self | 2014-02-04 |
| Movie | Lise Meitner: The Mother of the Atom Bomb | Self | 2013-02-02 |
| Movie | Kosmologisch - Der Anfang Von Allem | Sprecher | 2012-03-01 |
| Movie | Kosmologisch - Die Entstehung Des Himmels | Sprecher | 2012-03-01 |
| Series | Precht | Self | 2012-09-02 |
| Movie | Kosmologisch - Vom Stein Zum Leben | Sprecher | 2012-03-01 |
| Series | Pelzig hält sich | Self | 2011-02-15 |
| Series | Talk im Hangar-7 | himself | 2010-02-18 |
| Series | Ask Lesch | 2010-01-07 | |
| Movie | Universum und Quanten - Eine Reise zum Größten und zum Kleinsten | himself | 2010-06-02 |
| Series | Die Diskussion | Self | 2010-06-20 |
| Series | Markus Lanz | Unknown | 2008-06-03 |
| Series | Sci_Xpert - Leschs Universum | Self | 2007-04-29 |
| Series | Denkzeit | Self | 2007-01-20 |
| Series | Nachtlinie | Self | 2007-10-11 |
| Series | ANNE WILL | Self | 2007-09-16 |
| Series | Denker des Abendlandes | Moderator | 2006-04-02 |
| Series | Fröhlich lesen | Self | 2005-06-12 |
| Series | Die Physik Albert Einsteins | Self | 2005-09-27 |
| Series | Thadeusz | self | 2005-12-05 |
| Series | Kant für Anfänger | Wagner | 2004-01-01 |
| Series | Faszination Universum | Moderator | 2003-11-23 |
| Series | quer | Self | 2002-02-21 |
| Series | Planet Wissen | himself | 2002-09-30 |
| Series | Hart aber fair | Self | 2001-01-31 |
| Series | Lesch und Co. | Self | 2001-07-01 |
| Series | Münchner Runde | Unknown | 2000-01-17 |
| Series | Abendschau | self | 2000-05-04 |
| Series | Volle Kanne | Self | 1999-08-30 |
| Series | maybrit illner | Self | 1999-10-21 |
| Series | The Johannes B. Kerner Show | Self | 1998-01-22 |
| Series | Alpha Forum | Self | 1998-01-07 |
| Series | Alpha Centauri | himself | 1998-09-27 |
| Series | Im Dialog | self | 1997-01-17 |
| Series | Nachtstudio | Self | 1997-09-03 |
| Series | Leute heute | Self | 1997-07-23 |
| Series | Tigerenten Club | self | 1996-01-06 |
| Series | Die 4 Elemente | Self | 1995-01-01 |
| Series | Riverboat | Self | 1992-01-03 |
| Series | DAS! | Unknown | 1991-01-02 |
| Series | Blauer Panther | Self | 1989-01-01 |
| Series | ZDF-Mittagsmagazin | Self | 1989-10-02 |
| Series | Tele-Akademie | himself | 1987-04-12 |
| Series | Kölner Treff | Self | 1976-01-25 |
| Series | 3 nach 9 | Self | 1974-11-19 |