What minifig configuration has been included in the most sets?
So far, the best I can think of is the red classic space guy which appeared in 46 sets.

Considering minifigs were less specialized back then, I bet the winner is in that time period anyway, and the fact that spacemen wore an uniform makes me think there is no other minifig apperaing in 46 sets. Even the basic city worker only reaches a pale 21 sets.