I don't have one favorite, but some of my favorites are:
Tom Hanks, Robert De Niro, Al Pacino, Denzel Washington, Benicio Del Toro, Guy Pearce, Jack Nicholson, Philip Seymour Hoffman, Russel Crow, Bruce Willis, Javier Bardem, Jeff Bridges, Wesley Snipes and Ben Kingsley.
Some of them are:
Hilary Swank, Naomi Watts, Tilda Swinton, Uma Thurman, and Emily Blunt.
Suspense/action movies, Mystery/action movies, and drama/action movies.
Some of them are:
127 Hours, Leon, The diving bell and the butterfly, The Big Lebowski, The Godfather, Shutter Island, Oldboy, 12 Angry Men, Dirty Harry, The Next Three Days, Chugyeogja (AKA The Chaser), El laberinto del fauno (AKA Pan's Labyrinth), The Matrix, Jackie Brown, Casino, The Butterfly Effect and plenty of others.
Martin Scorsese.
Some others:
Chan-wook Park, The Coen Brothers, Steven Spielberg, David Fincher, and Klint Eastwood.