My Care Bear personality quiz
I'm too lazy to go through all my quizzes, lol, but my "Which Doctor from Doctor Who are you" quiz has 566 responses, and I think that's the most. :P The least... it was a Doctor Who poll about christmas specials, that had 16 responses. :) I don't really care about how many responses it has, to be honest.
Nope. And I'm too lazy to look.