Meryl Streep may be overrated in so far as people praise her to the skies for her accents, but she gets the job done.
George Clooney really isn't much of an actor, but isn't that what old Hollywood was all about?
Cary Grant and Gregory Peck weren't really acting. They were just being more or less themselves in roles that required a character more or less like themselves.
Same with Spencer Tracy and Ronald Reagan then. Same with Clooney now. Come to think of it, same with Katherine Hepburn (and Audrey Hepburn for that matter).
Bogie.