The Bunker is a 1981 CBS television film, Time/Life production based on the book The Bunker by James P. O'Donnell.
The film, directed by George Schaefer and adapted for the screen by John Gay, is a dramatisation depicting the events surrounding Adolf Hitler's last weeks in and around his underground bunker in Berlin before and during the battle for the city.
The film opens in 1945, with O'Donnell (James Naughton) gaining entry to the Fuhrerbunker by bribing a Soviet sentry with a packet of cigarettes.
Anthony Hopkins won an Emmy for his portrayal of Adolf Hitler. Actors on the set claimed his performance was so convincing[by whom?] that those playing German soldiers snapped to attention whenever Hopkins came onto the set, even if he wasn't in character.
(Summary from Wikipedia)