Villain is unknown, 54-0 over 40ish hands, nothing spectacular to date - he's folded a few flops and c-r'ed one flop, generating a fold. 65% fold to cbet so far, which is low when you're seeing that many flops. Not much aggression.

Flop is a standard light c-bet, i think betting anything 1/2 psb to psb has the same impact.

Turn is interesting, gives me a pretty good hand....
Bet 1/2-3/4 pot? fold to a decent re-raise?
river plan if called?

Full Tilt No-Limit Hold'em, $1.00 BB (9 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

Button ($103.20)
SB ($48.50)
BB ($138.60)
UTG ($41.20)
Hero (UTG+1) ($138.55)
MP1 ($248.50)
MP2 ($144.65)
MP3 ($141.60)
CO ($81.80)

Preflop: Hero is UTG+1 with J, A
1 fold, Hero raises to $3.50, 4 folds, Button calls $3.50, 2 folds

Flop: ($8.50) 5, 10, 10 (2 players)
Hero bets $5, Button calls $5

Turn: ($18.50) J (2 players)
Hero bets $?,