Who's your পছন্দ character? Were আপনি sad when [insert character died]/Did আপনি cry when [insert character]died? Who is hot? Do আপনি 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 আপনি want to be in? [insert character/house/book/movie] অথবা [insert character/house/book/movie]? Should [insert character] have married [insert character]?
Mostly because all of those (^) প্রশ্ন 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 প্রশ্ন to begin with.
"Who's hotter?" "Who would আপনি rather date?" "Who's your পছন্দ character?" "Which house is better?" "Who should have ended up with [insert character here]?
These are the ones that where on the শীর্ষ of my head. The "who's hotter" and "who's better with who" প্রশ্ন annoy me the most.