Der Einstein des Sex
 The Einstein of Sex: Life and Work of Dr. M. Hirschfeld (German: Der Einstein des Sex) is a 1999 German film directed by Rosa von Praunheim. The plot follows the life of the Jewish doctor Magnus Hirschfeld who was a sexologist and gay socialist. In 1897 Hirschfeld founded the first political gay group in history. In the film three of Hirschfeld's closest friends are portrayed: Baron Hermann von Teschenberg Karl Giese and Dorchen (a transsexual).