Hand #1 I had A5s for the nut flush draw. He actually called with ATo for the straight draw and was amazingly somewhat ahead (to his surprise I imagine). Once again he got sucked out on by a flush though.

Hand #2 he called with AJo. I had KK and held up(!).

Hand #3 he instacalled with KK. With his preflop raise I figured him for exactly that (well, AA or QQ too I guess) so I pushed assuming he would read that as a draw or lower overpair. He did, obviously.

I assume you had a set in hand 3?

Yes, top set. I thought it was interesting because the whole $1200 pot played out the way it did because of that extra $4 he put in preflop, which made me put him on a specific hand. It is an extreme example of how you shouldn't give away information to observant players. If he had raised $20 instead it might well have played out differently (I might have re-raise preflop, or made a smaller raise on the flop etc).

Nh sir. I have notice a few players doing the same thing.