AA in BB,8 limpers & I didn't raise. My buddy almost had a heartattack

[TimTimSalabim]

Since this is a 15 game, I'm guessing 8 limpers means there were a lot of mediocre/loose players, I'd go ahead and raise every time. At higher limits, where you might find a lot of good/loose players, issues of pot size manipulation and deception theoretically could be enough to outweigh raising for value. But in this case those other considerations have to outweigh getting 8 more bets into the pot, which with AA are going to be yours a very healthy % of the time, which adds up to a ton of value, so even then I doubt I'd pass that up.

Edit: To clarify what I mean by "theoretically", I mean if your hand was a lot weaker (say AK instead of AA), and there were a lot fewer limpers, the value in raising is a lot less, and could theoretically be outweighed by other considerations. AA in the BB with 8 limpers is a no-brainer raise in any game IMO.