Strange Action -- JJ vs. an all-in raise

[ericlambi]

Hand 1 I have no idea what the villain has. What hands make sense for him to limp/call a large raise? To me, AQ/KQ/QJ/QT are not likely in this situation. I can't peg him on AA/KK/QQ because he didn't raise pre-flop. That only leaves 44. Additionally, if he had such a strong hand, wouldn't he want a call instead of trying to get me to fold? The only hand I could think that made any sense at all was a flush draw trying to push me off, or a mid pocket pair thinking I had whiffed with AK/etc.