Who directed 'Taxi Driver' (1976)?

Who directed 'Pulp Fiction' (1994)? Who directed 'Psycho' (1960)? Who directed '2001: A Space Odyssey' (1968)? Who directed 'Titanic' (1997)? Who directed 'Inception' (2010)? Who directed 'Citizen Kane' (1941)? Who directed 'Back to the Future' (1985)? Who directed 'E.T. the Extra-Terrestrial' (1982)?