In my opinion Male actors Tom Hanks or Leonardo DiCaprio, female actresses Helen Mirren or Susan Sarandon.
I like Denzel Washington. My favorite was Richard Gere.
I've always been fascinated with Dustin Hoffman. He has been incredibly versatile and believable over the years. In Little Big Man, he amazingly portrayed ages 10 through 121. And I loved "Dorothy" in the movie Tootsie. There are dozens more including Rain Man, Midnight Cowboy, and Papillon.
Unfair question. Too difficult to decide.
I would have to agree with Tom Hanks.
This was a totally subjective question, there are no right or wrong answers (unless you said Will Farrell!)
For me it’s the actor or actress who does the most with whatever role they have.
Daniel Day-Lewis gets my vote
There is no such thing as best actor. All actors are best given the right roles?