PS $22 -- Turned Boat, why is this guy calling me?

Should I be attempting to pwn this guy on the river? Are there hands I beat that call a river beat?

MERRY CHRISTMAS STTF!!!! [img]/images/graemlins/tongue.gif[/img]

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (8 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

UTG+1 (t1500)
MP1 (t2240)
MP2 (t1490)
CO (t670)
Button (t2260)
SB (t1480)
<font color="#C00000">BB (t2330)</font>
<font color="#C00000">Hero (t1530)</font>

Preflop: Hero is UTG with 8[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/diamond.gif[/img].
Hero calls t20, <font color="#666666">1 fold</font>, MP1 calls t20, <font color="#666666">2 folds</font>, Button calls t20, SB completes, BB checks.

Flop: (t100) 5[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, BB checks, <font color="#CC3333">Hero bets t60</font>, MP1 folds, Button folds, SB folds, BB calls t60.

Turn: (t220) T[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets t140</font>, BB calls t140.

River: (t500) 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, Hero checks.

Final Pot: t500