AJ - Call/Fold?

[Mr. GQ]

This next hand is a Classic example of what I think is a key hand for me in a MTT. My image should be tight aggressive - the table has seen me open/cbet/win and open/fold to reraises pre or showdown winners with solid hands. Villain in this hand is average. I'm opening a little looser since we're on the bubble (30 or so till the money)

Full Tilt Poker
No Limit Holdem Tournament
Blinds: t500/t1000
(Ante: t125)
8 players
Converter

Stack sizes:
UTG: t64048
UTG+1: t19065
Hero: t17512
MP2: t20004
CO: t18910
Button: t11543
SB: t35817
BB: t19463

Pre-flop: (8 players) Hero is MP1 with A[img]/images/graemlins/heart.gif[/img] J[img]/images/graemlins/spade.gif[/img]
2 folds, <font color="#cc0000">Hero raises to t2674</font>, 4 folds, BB calls t1674 <font color="aaaaaa">(pot was t5174)</font>.

Flop: 7[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/diamond.gif[/img] (t6848, 2 players)
BB checks, <font color="#cc0000">Hero bets t3333</font>, <font color="#cc0000">BB raises all-in t16664

What are people usually doing here? Why?