He is perhaps best known as the founding father of the Junge Bühne (‘Young Stage’), an avant‑garde matinee-theatre which came into being in Berlin in the spring of 1922. In 1927 he co‑authored the
libretto to
Friedrich Hollaender’s cabaret
Bei uns um die Gedächtniskirche rum. In June 1929 he co‑founded (together with
Robert Siodmak and
Edgar G. Ulmer) Filmstudio 1929, a Berlin production house. In 1929–1930 he co‑produced, together with
Heinrich Nebenzahl, the silent
quasi-documentary film
Menschen am Sonntag, directed by Robert Siodmak (1900–1973) and starring Brigitte Borchert and Erwin Splettstößer, which shows a candid picture of life in Weimar-era Germany. In 1998 a small book written about him by Günther Elbin,
Am Sonntag in die Matinee, appeared in Germany. Following this development, in November 2000, a memorial plaque was erected on the façade of the tenement at the Brandenburgische Straße 36 in what is now the Berlin borough of
Charlottenburg-Wilmersdorf, identifying the house as the locale where Moriz Seeler lived from 1916 to the mid‑1920s. In September 2002 a street, previously known as Franz‑Ehrlich-Straße, in another of the Berlin boroughs (that of
Treptow-Köpenick), was renamed Moriz‑Seeler‑Straße in his honour. The capital of Austria has had a street named Moritz‑Seeler‑Gasse since 1969. ==Deportation and death==