Monster hunter 3 at about 255 hours
Fire emblem radiant Dawn at 245 hours (estimated)
Brawl i dont remember but i believe it is over 200 hours
One Piece Unlimited Adventure at like 99 hours or something (cant remember cuz i havent had my wii in a while)
Resident evil 4 (multiple play throughs) Not sure how many hours...
Mario kart Wii should be pretty high...