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POPSThe Dark Knight May Be Struck Down By Tropic Thunder After All It couldn't last forever. Eventually someone had to knock The Dark Knight off of the box office throne. Last weekend Pineapple Express took a crack at it (well more of a pot shot really (I know, I know, bad pun) but couldn't muster quite the cash. Now as Batman heads into his fifth weekend, attendance may have finally dwindled enough for someone to topple him.