88 Overpair vs Maniac

[Double Eagle]

From today's PS $50NL, I am 12th or so of 120 remaining. This is the fourth time villain's chips have been in the middle in 3 orbits or so and he has yet to show down a hand. I was originally playing this for set value, but can I call here?

PokerStars No-Limit Hold'em Tourney, Big Blind is t100 (9 handed) converter

MP3 (t2635)
CO (t1315)
Hero (t5455)
SB (t6750)
BB (t4145)
UTG (t6735)
UTG+1 (t6770)
MP1 (t1670)
MP2 (t3745)

Preflop: Hero is Button with 8[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/spade.gif[/img]. UTG posts a blind of t100.
<font color="#666666">2 folds</font>, <font color="#CC3333">MP2 raises to t200</font>, <font color="#666666">2 folds</font>, Hero calls t200, BB calls t150, <font color="#666666">1 fold</font>.

Flop: (t700) 2[img]/images/graemlins/diamond.gif[/img], 3[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
BB checks, MP2 checks, <font color="#CC3333">Hero bets t500</font>, BB folds, <font color="#CC3333">MP2 raises to t3545</font>, Hero ?????