First hand confuses me. You say the flop came all clubs but then say he won't fold the
. Well, I might be missing something but ain't the
already out? Also if you think he is betting any Ace or a club it would be correct to raise him on the flop. And finally, your smooth call on the turn is pretty bad too. I think you need to make your decision on the turn as to whether you are gonna take the lead or fold, as you simply cannot be check-calling a LAG. It could get very expensive for you by the time you get to showdown. Lead into the turn and buy yourself the lead and the river, or the pot.
Second hand is an obvious call, you can't fold with those pot odds, although I do agree with iceman that you should raise more on the flop.