re: Poker & 9 player sitngo
Late in SNGs often present shove or fold situations that are usually correct. Naturally it's player dependent, but shove or fold is a standard play late in SNGs.
In the first hand, shoving is a good play to punish the limper in a high blind situation. As the big stack you should not let anyone limp with the blinds this high without making them pay.
Similar situation in the second hand. If he limps, punish. Plus as panamajoe said, having an Ace heads up is pretty strong. -With A-3 Against one opponent, he has a 10% chance of having a bigger Ace, and a 5% chance of having a pair.
Sure there are other ways to play it, depending on the player and past histories, especially heads up, but given the information, you made good decisions regardless of results (which were good anyway!)