Facing the "crazy pre-flop all-in guy"

[napawino]

I'm still thinking about a hand from a PokerStars $160 Double Shoot-out tourney. For those who aren't familiar with the format, it's a winner-take-all set-up. You have to win your table, then win the final table to win an $11k seat & prize package. Although I'm interested in overall strategy as well, here is the specific situation...

Level 3: Blinds 25/50 (Initial table)
6 players left
I'm in the BB with T$3200 (chip leader but #2 & #3 are ~2700)
The button has gone all-in the last 5 hands he has played & has never been called. (Out of around 15 hands total) He is not short-stacked & has about 1700 in chips.

Folded to the button, who (surprise) goes all in. SB folds.
I have AsJs in the BB.

Call or fold?

The results don't really matter, but what hands should I call with here?