Playing NL against a maniac - Hand analysis

6 players, NL $50 BB.

I have only seen villian play 8 hands, 5 of which he saw the flop, 3 of which he saw the river.
Two hands ago, villian tripled up after hitting a gutshot Q-high straight on the river.
Prior to that he won a pre-flop all-in with his 66 outdrawing KK when a 4-flush hit the board.

Villian, on the button has $11,293.
Hero, in the BB, has $1,820.

All fold around to button who raises pot-sized to $125.
SB Folds.
BB, Hero, holds J[img]/images/graemlins/heart.gif[/img]Q[img]/images/graemlins/spade.gif[/img] and calls $75.

Flop

T[img]/images/graemlins/spade.gif[/img]9[img]/images/graemlins/spade.gif[/img]K[img]/images/graemlins/spade.gif[/img]

Villian checks.
Hero bets $200.
Villian calls, pot now $675.

Turn

T[img]/images/graemlins/spade.gif[/img]9[img]/images/graemlins/spade.gif[/img]K[img]/images/graemlins/spade.gif[/img]7[img]/images/graemlins/heart.gif[/img]

Villian checks.
Hero bets $500.
Villian calls, pot now $1675.

River

T[img]/images/graemlins/spade.gif[/img]9[img]/images/graemlins/spade.gif[/img]K[img]/images/graemlins/spade.gif[/img]7[img]/images/graemlins/heart.gif[/img]A[img]/images/graemlins/heart.gif[/img]
Villian goes all-in, pot now $2670.
Hero has $995 left and calls.

[RDWallace]

why is villain acting first if he is the button? this line is ok.

[Niwa]

I dont see much analysis.

[creedofhubris]

Preflop, QJ is not an easy hand to play postflop out of position unless you flop something amazing, like here.

Postflop, hero flopped a monster, bet every chance he got and called an all-in where he is probably best, getting 2.5:1. Analysis: routine.