There are cinemas in Opera that show movies in "Original Language" aka English. Its actually not to hard to watch English language movies in Paris at all.
Most of the major cinemas show movies in v.o. (version originale). So if you go to Les Halles, the Champs Elysees, Saint Germain or Bastille, normally films are in English.However, some areas are not alwyas showing films in English (like in Place d'Italie or sometimes near Opera) and they could be dubbed. Look for films in VO.