Flopped top 2....weird turn action

[aggie]

villian is 27/9 over 66 hands. I have not noticed anything out of line. My image is very aggressive.

PokerStars No-Limit Hold'em, $2 BB (6 handed) converter

BB ($80)
UTG ($167.45)
MP ($1366.45)
CO ($218)
Hero ($197.80)
SB ($563.30)

Preflop: Hero is Button with Q[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to $8</font>, SB calls $7, BB calls $6.

Flop: ($24) K[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, BB checks, <font color="#CC3333">Hero bets $20</font>, SB calls $20, BB folds.

Turn: ($64) A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $535.3 (All-In)</font>

Why the hell is he betting so much if he has J-10. Should i call?