Greatest Male Film Performances

Robert de Niro in the Deer Hunter

Where's Tom Hanks??

I say Tom Hanks in Forrest Gump or Dustin Hoffman in Rain Man definitely deserve to be on that list.

These are the greatest single performances by the Greatest Actor; Period!!!!!!!!!
Marlon Brando [on Al Pacino] "I didn't say much to Pacino when we were making The Godfather (1972), but I not only consider him one of the best actors in America, but in the world. I never meant anything more in my life".

"Al PACInO"-- Godfather II, Dogday Afternoon, Serpico, Godfather, Scarface, Carlito's way ,Scent Of A woman, And Justice For All, The Godfather III, Donnie Brasco, Heat,The Merchant of Venice, Insomnia, The Insider, Glengarry Glen Ross, You don't know jack, Frankie and johnny, The Devil's Advocate, Chinese Coffee. Now can u beat that.,,,.
Then ,,
Robert Deniro, Jack Nicholson, Marlon Brando, Dustin Hoffman, Leonardo, Denzel, Gene Hackman And i'am running out of time!!!! I'll post later!@!

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Probably (not my very favorites but, in my opinion, the very best), in no particular order...

Top10:

Marlon Brando - On the Waterfront (if I had to pick the #1, it would be it)
Al Pacino - The Godfather: Part II / Scent of a Woman / Dog Day Afternoon
Robert De Niro - Raging Bull
Jack Nicholson - One Flew Over the Cuckoo's Nest
Daniel Day-Lewis - My Left Foot / There Will Be Blood
George C. Scott - Patton (no mention yet??)
Peter O'Toole - Lawrence of Arabia
Anthony Hopkins - The Remains of the Day
James Stewart - The Philadelphia Story / It's a Wonderful Life
Gregory Peck - To Kill a Mockingbird

Honorable Mentions:

Ben Kingsley - Ghandi (could've been in the top10)
Alec Guiness - The Bridge on the River Kwai
Gary Cooper - High Noon
Paul Newman - Hud / The Verdict / Cool Hand Luke
Anthony Hopkins - The Silence of the Lambs
Humphrey Bogart - Casablanca
Tom Hanks - Forrest Gump
Jack Nicholson - Chinatown / As Good as It Gets
Robert De Niro - Taxi Driver / The Deer Hunter
Spencer Tracy - Captain Courageous
Jack Lemmon - The Apartment
Sean Penn - Mystic River
Clint Eastwood - Unforgiven
Marlon Brando - The Godfather / A Streetcar Named Desire
Harry Dean Stanton - Paris, Texas
...
and so on, still plenty to mention...

['/' meaning or]

most of the opinions are similar to each other , means that most of you are influenced by a specific choices. what a disappointing . also, the thread is talking about (performances) not about (actors) so no need to mention your favorite actors along with the best movies for each one of them !!
for me , the ten best leading role performances so far (in order) are :
10- orson welles : citizen cane
9- jack nicholson : chinatown
8- Daniel day lewis : there will be blood
7- Paul Newman : the verdict
6- Denzel Washington : training day
5- Al Pacino : The godfather 2
4- Jack Lemmon : Save the tiger
3- F.Murray Abraham : Amadeus
2- Maximilian Schell : Judgment at Nuremberg
1- Geoffrey Rush : Quills

1. Daniel Kash- Solo (2013/I)
2. Robert Englund- The Phantom of the Opera (1989)
3. Burgess Meredith- The Sentinel (1977)
4. Jack Nicholson- Batman (1989)
5. Dustin Hoffman- Hook (1991)
6. Frank Langella- Masters of the Universe (1987)
7. Claude Rains- Frank Capra's Mr. Smith Goes to Washington (1939)
8. Walter Huston- The Treasure of the Sierra Madre (1948)
9. Jack Lemmon- Some Like It Hot (1959)
10. Gene Wilder- Willy Wonka & the Chocolate Factory (1971)
11. Daniel Kash- Hidden Agenda (1999)
12. Daniel Day-Lewis- There Will Be Blood (2007)
13. Bob Hoskins- Mona Lisa (1986)
14. Christopher Plummer- Hidden Agenda (1999)
15. Beau Bridges- Alice in Wonderland (1985)
16. Daniel Kash- Goosebumps: Chillogy (1998)
17. Kevin Spacey- Casino Jack (2010)
18. Bradley Cooper- American Sniper (2014)
19. Daniel Kash- Gross Misconduct: The Life of Brian Spencer (1993)
20. Jack Palance- City Slickers II: The Legend of Curly's Gold (1994)

Volker Flenske: (While torturing David) I don't know why you're doing this to yourself!

http://www.imdb.com/list/ls075762609/
Here are what I think are the greatest of all time in order.