|John Gielgud (1904 - 2000)|
|Hamlet (1948) [The Ghost]: Plays the ghost of Laurence Olivier's father, who was murdered by Basil Sydney pouring poison in his ear. (Although John provides the voice of the ghost, in the flashback depicting the murder, the role was played by a different, uncredited actor.)
Julius Caesar (1953) [Cassius]: Stabbed in the stomach by Michael Ansara, following John's own orders.
Richard III (1955) [George, Duke of Clarence]: Stabbed in the stomach with a sword, then drowned in a vat of wine, by Michael Gough and Michael Ripper.
Hamlet (1964) [The Ghost]: Plays the ghost of Richard Burton's father, who was murdered by Alfred Drake pouring poison in his ear. (I haven't seen this version, but since it reportedly only depicts the ghost as a disembodied voice, I presume that the murder was not depicted on-screen.)
The Loved One (1965) [Sir Francis Hinsley]: Commits suicide (off-screen) by hanging himself from the diving board of his swimming pool. His body is shown afterwards when Robert Morse discovers him, then again in the funeral home when Rod Steiger prepares him for his funeral. (Thanks to Sammy)
Hamlet (1970) [The Ghost]: Once again, plays the ghost of Richard Chamberlain's father, who was murdered by Richard Johnson pouring poison in his ear. (I haven't seen this version, so I don't know whether the murder was depicted on-screen or not.)
Julius Caesar (1970) [Julius Caesar]: Stabbed repeatedly by Jason Robards and the other conspirators. (Again, I haven't seen this version, but I'm familiar with the play.)
Richard II (King Richard the Second) (1978) [John of Gaunt]: Dies (I can't recall the exact cause) after delivering a speech to Derek Jacobi. (I haven't seen this, but I've read a summary of Shakespeare's play.)
Caligula (1979) [Nerva]: Drowned when Malcolm McDowell pushes John's head under in the bath, even though John was already dying from having slit his wrists.
Arthur (1981) [Hobson]: Dies of natural causes (I can't recall whether a specific cause was mentioned), with Dudley Moore at his bedside. (It's been a long time since I've seen this movie, so my memory is vague.)
Haunted (1995) [Dr. Doyle]: Dies (off-screen), presumably of old age/natural causes, several years before the story takes place; towards the end of the movie Aidan Quinn discovers that John has been a ghost all along.