PS3 unless noted
Tales of Graces (Wii)
Final Fantasy XIII
Star Ocean TLH International
Sin and Punishment 2 (Wii)
Ace Attorney Investigations: Miles Edgeworth (DS)
Katamari Forever
---------------------
Yakuza 3
Resonance of Fate
Nier Replicant
Haven't played the ones below the line yet. Tales of Graces probably favourite, but I've pretty much equally liked Miles Edgeworth and Sin and Punishment 2, they are just too far apart as genres to fight over the favourite spot.