My list:

Lon Chaney, Sr.
Laurence Olivier
Meryl Streep
Robert DeNiro
Marlon Brando
Daniel Day Lewis
Jeremy Irons
Robert Mitchum
James Dean
Jim Broadbent
Toshiro Mifune
Alec Guinness
Buster Keaton
Dustin Hoffman
Judi Dench
Charles Laughton
Lillian Gish
Sidney Poitier
Kenneth Branagh
Debra Winger
Al Pacino
Stuart Whitman (Underrated, in my book)
Aidan Quinn
Bette Davis
Lee J. Cobb
Edward G. Robinson
Katherine Hepburn
Charlie Chaplin
Tom Hanks
Marisa Tomei
James Cagney
Henry Fonda
Johnny Depp
John Barrymore
Janet Margolin

I'm sure I'll think of more.

Chanteyranger