Some of these may be a bit contentious to you serious movie buffs but for me it goes:
Jack Nicholson - McMurphy in One Flew Over the Cuckoo's Nest
Marlon Brando - Don Corleone in The Godfather
Gregory Peck - Atticus Finch in To Kill a Mockingbird
Paul Newman as Luke in Cool Hand Luke
Audrey Hepburn - Holly Golightly in Breakfast at Tiffanys
Michael Caine - Alfie in Alfie
Peter O'Toole - T.E Lawrence in Lawrence of Arabia
Tom Hulce - Mozart in Amadeus
Malcolm McDowell - Alex in A Clockwork Orange
Gene Hackman - Popeye Doyle in The French Connection
Sissy Spacek - Carrie in Carrie
Ben Kingsley - Mahatma Ghandi in Ghandi
Jodie Foster - Clarice Starling in Silence of the Lambs
Vivien Leigh - Scarlett O'Hara in Gone with the Wind
Clark Gable - Rhett Butler in Gone with the Wind
Kirk Douglas - Spartacus in Spartacus
Charlton Heston - Ben Hur in Ben Hur
I could go on...but I won't!
Jack Nicholson - McMurphy in One Flew Over the Cuckoo's Nest
Marlon Brando - Don Corleone in The Godfather
Gregory Peck - Atticus Finch in To Kill a Mockingbird
Paul Newman as Luke in Cool Hand Luke
Audrey Hepburn - Holly Golightly in Breakfast at Tiffanys
Michael Caine - Alfie in Alfie
Peter O'Toole - T.E Lawrence in Lawrence of Arabia
Tom Hulce - Mozart in Amadeus
Malcolm McDowell - Alex in A Clockwork Orange
Gene Hackman - Popeye Doyle in The French Connection
Sissy Spacek - Carrie in Carrie
Ben Kingsley - Mahatma Ghandi in Ghandi
Jodie Foster - Clarice Starling in Silence of the Lambs
Vivien Leigh - Scarlett O'Hara in Gone with the Wind
Clark Gable - Rhett Butler in Gone with the Wind
Kirk Douglas - Spartacus in Spartacus
Charlton Heston - Ben Hur in Ben Hur
I could go on...but I won't!