Ralph Fiennes in Quiz Show - a difficult role to play, but he created great sympathy
John Malkovitch in Dangerous Liaisons - mesmerising
Liza Minelli in Cabaret
Jodie Foster - Silence of the Lambs
Malcolm McDowell - A Clockwork Orange
Richard E Grant - Withnail and I
Not sure whether all of them are the best acting performances of all time, just trying to think of films where the actor was perfect for the role and completely believeable, so you couldn;t imagine anyone else in the part.
John Malkovitch in Dangerous Liaisons - mesmerising
Liza Minelli in Cabaret
Jodie Foster - Silence of the Lambs
Malcolm McDowell - A Clockwork Orange
Richard E Grant - Withnail and I
Not sure whether all of them are the best acting performances of all time, just trying to think of films where the actor was perfect for the role and completely believeable, so you couldn;t imagine anyone else in the part.