Well since I'm already in here, I may as well give my opinions. Take it for what it's worth!

1. Looks Good. I play that similarly.
2. Raise Flop Harder, you really need to chase that draw out. Turn is fine, really don't like the river raise though, I just don't see the value there against this villain...
3. Against this villian, river is a SNAP FOLD. He is never pushing there with a hand worse than your 1-card straight.
4. Trickier. Flop is good, Turn Check-raise smells bad. With as relatively passive as this guy is, I probably give him the benefit of the doubt here and fold. It's really hard to imagine a passive player taking this line with a flush draw or a 1-pair hand...
5. Tough, villians range looks pretty wide here. I think Raising the turn is the only way in this hand, but no raise wouldn't commit you, so the turn looks to be push/fold. A set would likely be betting harder with the flush draw out there, so we can probably discount that. My guess is that villian has only a few hands here, Any other reasonable J (except for KJ, AJ) has you beat on the river. The only thing you are beating on the river is a bluff, so fold.