By the way, one of the most interesting quiz series here on JetPunk :-)
hair-splitter, nit-picker, pettifogger,
egghead, pedagogue, bluestocking,
And also @someone, do you mean walking encyclopedia? (again, I didnt spot it first and though, hm what is waling...) or did you mean wailing?
Maybe Kurt Russell's and Keye Luke's Large Problem in Small Cathay has been seen by everyone who's ever owned a TV at this point and would've clicked better.