For the first hand, my gut says he has you beat. He limp /calls, which could any crap, really. The flop, he merely smooth calls. This move tells me that either:
A. He has a flush draw or OESD.
B. He is calling with top pair, jacks, and doesn't know where he's at. (I'm thinking JT or worse here, he didn't raise)
C. He's floating with crap to steal later.
D. Maybe a set...?

In any case, the straight draw came (9T hits), top pair hits trips, the set boats up... the only case where you win is the busted flush draw or some complex move where he floated two streets.

It takes big balls to float the turn like that to bluff river. If he did that (unlikely) then he probably deserves the pot anyway. Fold.

The second hand is easier, in my opinion. The bet may be a little weak... and it *might've* caused Action Al to try a move on you. However, I don't like calling huge overbets with just a pair. If he's that aggressive with air, you'll stack him later.