https://stackoverflow.com/questions/2076370/most-underused-data-visualization is an awesome question. It's not particularly suited to stack overflow though. I think it is definitely suited to CV, although it could probably be asked more precisely. I asked the moderators on SO to move it here, and the response was "declined - No, I think it would be too subjective there too. You can try re-asking it, but I won't migrate it."
Can I re-ask this question, or would it be worth re-trying to get it moved over, or should I not bother, because this question (or one like it) likely to be closed on CV as well?