Okay its been a while since I posted in this thread but.
Hand 2:
Why are you waiting until the turn to bet? 2 pair is very vulnerable, it is not the nuts, dont slow play it. I might check this flop if I'm facing a maniac who I know will bet. But against the player you described I bet. You want this player to think that you are bluffing always, so just fire bets at him every street.
This player would have bet here 75% of the time. He would bet if he hit a pair, any type of draw, or better.

Hand 4: BB has JJ QQ AK, or maybe TT...I dont think hes folding KK here.
Button has AA or KK. IT doesnt make sense why the button would cold call your raise and then RR the BB...if he was slow playing his Aces or Kings why wouldnt he continue to slow play them?? It just doesnt fit....its like he changed his mind half way through and decided to finally Raise his Aces or KK. OR maybe hes just a donk and did that with a small PP because he was tired of everyone raising him??
Okay this hand really shocked me. BB folded his KK face up and the button showed 22. I really thought the button had QQ-AA here too because it seemed like the only line that fit. He's a pretty solid player and rarely if ever makes complete donk moves.