It depends on the number of big blinds effective the stacks are and how the action played out to me (plus number of other players in the hand to act behind me).
If someone just goes all-in unprompted opening the action, I think calling TT+ and AQ+ in any fast structure from 100BB and down would be fine. You probably can think about calling worse depending on toughness of table/tournament. I know I'm definitely calling looser if I want to double or bust and move on to something else - having a bigger stack is more fun.
Deeper stacks and especially if it is a raising war pre-flop (3bet, 4bet, 5bet) I'm more likely to tighten up to KK+ and AK against some.
While most sane people aren't bluffing like this and have something they think is the best hand, you will run into people who just go crazy hoping to build a big stack and you have to get an idea of who they are eventually, so call and make a note of what they can show up with in an early all-in for future use.
Good luck to you!