Hand #1 I fold turn. If you give this guy no credit a turn call is fine, but you definately have to fold that river shove. Every card in the world that should scare a hand you beat showed up and he's still playing hard.

Hand #2 is totally fine. I check if I know the villain will pay me off anyway if my draw completes, but against most I play it the way you did.

Hand #3 is fine against this guy.