Quads!!! My one outer :)

Haven't gotten this lucky in a long time; 0.5/1 NL:

SB posts (SB) $0.50
Hero posts (BB) $1

Dealt to Hero [5  5 ]
UTG raises to $4
fold, fold, fold, fold, fold, fold, fold,
Hero calls $3
FLOP ($9.50) 8  5  9
Hero checks
UTG bets $4.75
Hero raises to $12
UTG calls $7.25
TURN ($33.50)  6
Hero bets $15
UTG calls $15
RIVER ($63.50)  5
Hero bets $20
UTG raises to $60
Hero raises to $217 (AI)
UTG calls $71.05 (AI)
Hero shows 5  5  
(Pre 19%, Flop 5.2%, Turn 6.8%)

UTG shows 8  8
(Pre 81%, Flop 94.8%, Turn 93.2%)

Hero wins $321