Funky river decision

[Vammakala]

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) pokerhand.org hand converter

SB ($50.50)
BB ($28.80)
UTG ($51.95)
MP ($29.55)
CO ($36.80)
Hero ($70.20)

Preflop: Hero is Button with T[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/club.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to $2</font>, <font color="#666666">1 fold</font>, BB calls $1.50.

Flop: ($4.25) 6[img]/images/graemlins/diamond.gif[/img], 3[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets $3.5</font>, BB calls $3.50.

Turn: ($11.25) J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets $8</font>, BB calls $8.

River: ($27.25) A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets $15.3 (All-In)</font>, Hero ???

For one I didn't fall into the trap of checking behind on turn and giving him free card. What course of action should I do, he pushed almost instantly. I have less than 20 hands of him, he's 50/17/2 over 15 hands. Haven't seen him do anything completely retarded, but the sample is small.

Call/fold? What about the other parts of the hand?