1 almost never
2 a reraise at my limit (NL25) almost always means JJ+ and AK
3 I'll make this play only with KK and QQ. AA I simply shove, coz I find that play to be the most effective. I only call with JJ (set-hunting) or AK (don't want to play a big pot OOP with this hand)
4 AA I shove, occasionally 3-bet
5 KK I 3-bet, occasionally shove depending on stack sizes.
6 QQ/JJ/ any other PP I call, so as to try to invite the orignial raise-callers to limp-in to fulfill my set implied odds.
7 I'll probably call w/ AQs, fold AQo and mix it up with AK and AKs

If I am one of the orignial raise-callers I'll probably play the same way as when I am the original PF raiser. Fold to any all-in except AA and KK. QQ is strong but not strong enough against 2 people who are going nuts.