What would you do? #30

I've been sitting at this table where this erratic player - almost maniac has been raising crazy amounts. One hand, he'll raise UTG to $25, the next, $6, etc. He's a 64 / 39 / 3.3 / 50 / 0 over ~40 hands. What do you do here?

Full Tilt Poker $0.25/$0.50 No Limit Hold'em - 8 players - http://www.thehandconverter.com/hands/387221
The Official DeucesCracked.com Hand History Converter

MP1: $93.95
MP2: $10.75
CO: $18.75
Hero (BTN): $55.20
SB: $51.05
BB: $28.95
UTG: $50.55
UTG+1: $22.00

Pre Flop: ($0.75) Hero is BTN with 6h 6d
UTG raises to $17.50, Hero ???


Click to see results

I think this is clearly a shove / fold situation. However, if I shove, he has about 2:1 odds to make a call. I think at best, I'm 50/50 with him. Do I really want to get it all in at a spot where I have 50% equity? As a note, I got it all in at a later hand where I held AK to his J9 and he spike a 9 and runnered Jacks to win my stack. He sat out shortly thereafter.7 folds

Final Pot: $1.25
UTG wins $1.25