Who's your favorito character? Were you sad when [insert character died]/Did you cry when [insert character]died? Who is hot? Do you hate [insert character]? Why doesn't anybody like [insert house/character/book/movie]? (Usually this pertains to Ginny.) Why do people like [insert house/character/book/movie]? Which house would you want to be in? [insert character/house/book/movie] Or [insert character/house/book/movie]? Should [insert character] have married [insert character]?
Mostly because all of those (^) perguntas have been asked at least twice, for almost every character that has ever been mentioned in the entire series. Not to mention that they're very generic perguntas to begin with.
"Who's hotter?" "Who would you rather date?" "Who's your favorito character?" "Which house is better?" "Who should have ended up with [insert character here]?
These are the ones that where on the topo, início of my head. The "who's hotter" and "who's better with who" perguntas annoy me the most.