[udbrky]

Hand 1 is a super easy shove. I'd shove here any pair 77+, KJ+, A8+. You're shortstacked and you've gotta pick a hand and gamble. A double up will afford you the chance to watch people butt heads and not have to risk chips with a mediocre hand. Just adding the blinds and antes will bring you up to about even with the rest of the table. If you let this go, you'll be out by the next level. If you run into a bigger hand, you're more than likely a coin flip against a smaller pair, or 40% against an A, or 30% against Ak or AQ. Gamble here.

Hand 2 - I don't think it's a shove. But I don't think you're necessarily behind. Make a 2/3 PSB and see what he does. Just because he checked the nuts on 2 streets doesn't mean he's going to do it again. Had the bubble burst yet when he checked them? Why would he want to bet out with the nuts when he can check and let a more desperate player catch and stack him and burst the bubble?