By 1922 he and his brother were well enough known to open their own cabaret, Kabarett Leopoldi-Wiesenthal, which developed a reputation as a centre for such later celebrated performers as Hans Moser, Szöke Szakall, Max Hansen, Fritz Grünbaum, Karl Valentin, Raoul Aslan und Otto Tressler.
She directed several films in collaboration with the Cornucopia Theater that were based on the plays of Franz Xaver Kroetz (Música Para Si, Viagem Para a Felicidade, both in 1978 and Outras Perspectivas in 1980) and Karl Valentin (E Não se Pode Exterminá-lo? - 1979).
Also in 1929, "Der Sonderling" ("The Eccentric") gave her the chance to work with one of Germany's comedy giants, Karl Valentin.
Karl Marx | Karl Pilkington | Karl Lagerfeld | Karl G. Heider | Karl Rove | Karl Pearson | Karl May | Karl Liebknecht | Karl Friedrich Schinkel | Karl Dönitz | Karl Jenkins | Karl Stefanovic | Karl Bodmer | Karl Wilhelm Friedrich Schlegel | Karl Malone | Valentín Alsina | Karl Wolf | Karl Valentin | Karl Popper | Karl Malden | Karl Kesel | Karl Barth | Karl Richard Lepsius | Karl Philipp von Wrede | Karl Kautsky | Karl Johans gate | Karl-Heinz Kämmerling | Karl | Valentín Alsina, Buenos Aires | Karl Weierstrass |