I tried to find last names that were not shared by multiple A-List actors. Phillip Seymour Hoffman never crossed my mind when selecting Dustin Hoffman. I would say Dustin is the much more famous of the two, but your point is definitely valid.
Dustin was the first guy I thought of as well but these days I think Philip Seymour is at least as well known and well respected, if not more. Dustin's career peaked quite a while ago.
Good quiz. Got 26 out of 28. Not too bad. Don't know who Peter Dinklage is though. Can't believe i missed viggo mortensen...he's a really talented actor and there's like four or five good movies i saw him in....oh well.
haha, didn't read the caveats, just the title "Actors by last name" and the term actor is used for both male and female, perhaps the title should reflect the fact that it's only males.