Here are my top 3 greatest actors. In no particular order:
AL PACINO

In my opinion, his greatest performance is as Michael Corleone in 'The Godfather 2'.
TOM HANKS

'Forrest Gump' was memorable and he really made us believe he was a retarded.
ROBERT DE NIRO

'Travis Bickle' can get into your nerves when he wanted to, but he can also make you laugh in 'Analyze This' and 'Meet the Fockers'.
I also love Tom Hanks. He's the best for me, also because of Forrest Gump. :)
basically i agree!
Robert de niro
Paul newman
Jack nicholson
marlon brando
Al pacino
this is my list