Starting in the 1990s, Kanies played in a large variety of German television series and movies and in eight feature films. His film debut was Dark Days, directed by Margarethe von Trotta. In 1998, Rolf had his first international appearance in the science fiction series Lexx, in which he played Reginald J. Priest, a troubled alien who is also the President of the United States. In the same year Kanies played Adolf Hitler in the American production Joe and Max directed by Steve James (STARZ! Pictures). In 2005, Kanies performed the role of Gen. Hans Krebs in Oliver Hirschbiegel’s Downfall, which was nominated for an Oscar. In 2008, he played the war veteran Friedrich Hoch in A Woman In Berlin, directed by Max Färberböck, which won the Best International Feature Award at the Santa Barbara International Film Festival in 2009. In 2008 Rolf also appeared in the movie The Countess as Count Krajevo, a film by Julie Delpy.