KK raised on the flop

[SpartanCA]

The only possible made hand i can see the Villan having is a set of 8's but calling a re-raise with this hand isn't a great play.
I think it's more likely he has a flush draw and is getting all his money in either hoping you had AK and missed the flop or hoping to draw out on you and getting the most value from it.
Another possibility is he could think your making a continuation bet on a missed flop but re-raising all in seems like overkill if that is the case.
I think you should call here.

[ReptileHouse]

This is a smaller overpair, draw, A8, or other random crap way more often that it's a set. I call with visions of dollar signs dancing in my head.