NL 10: Monster or Some Type of Weird Bluff?

[AHMWM]

What do I do on the river here with only TPTK. Not really sure what the hell villain is doing. He is playing pretty TAG at 25/20.

Full Tilt Poker, $0.05/$0.10 NL Hold'em Cash Game, 5 Players
LeggoPoker Hand History Converter

CO: $8.65
Hero (BTN): $9.85
SB: $9.50
BB: $11.70
UTG: $10.35

Pre-Flop: Q[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/spade.gif[/img] dealt to Hero (BTN)
UTG folds, CO calls $0.10, <font color="red">Hero raises to $0.50</font>, SB folds, BB calls $0.40, CO folds

Flop: ($1.15) Q[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/diamond.gif[/img] (2 Players)
BB checks, <font color="red">Hero bets $0.75</font>, BB calls $0.75

Turn: ($2.65) 4[img]/images/graemlins/club.gif[/img] (2 Players)
BB checks, <font color="red">Hero bets $1.50</font>, BB calls $1.50

River: ($5.65) 8[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">BB bets $8.95 and is All-In</font> Hero???