the way vbulletin polls have been setup that might be rather difficult to accomplish.
with books i believe full discussion to be the best way of sharing favourite authors and works, allowing comprehensive decriptions and personal observations to be made.
movies and tv can be narrowed down to polls i suppose, by similar shows. comics are so vague to most people that finding people who know all the comics in a poll will be difficult
hit Mr. Qwerty and go along with the form of the book reviews we all detested at school so much, yet are easily capable of now we are adults, in fact we demand book reviews as the only comprehensive method of knowing the truth!!!