In 1975, Landau was hired for the British sci fi TV series "Space: 1999", where he played Commander John Koenig. Barbara Bain was also in that series. Then Landau starred in movies such as "Meteor" (1979) with Sean Connery and "The Fall of the House of Usher" (1979) where he played Roderick Usher. In 1982 he returned to play an unbalanced character in "Alone in the Dark", directed by Jack Sholder and starring Jack Palance and Donald Pleasence. In 1988, Landau was nominated for an Academy Award for his supporting role in "Tucker: The Man and His Dream" directed by Francis Ford Coppola, and then "Crimes and Misdemeanors" (1989) by Woody Allen. 