Two particular moments comes up to my mind:

- Whole company going downhill and when Jim as co-manager got nervous about another Michael's "brilliant" idea of distracting people from work, he stuns him and audience with "They need this game. Let them have this stupid little game"

- Another dialogue with Jim implying that "That's what she said" lines are more self-conscious than everybody in the office thinks.

Scranton branch having one of or lone best finance numbers across whole company just makes me think Michael knew along what is he doing. This plot was never expanded in the show for obvious reasons.