In no particular order:
1. Dead Rising Servbot mug cup - exclusive to Korea, limited to 500
I'll be putting one up on auction soon
2. Kingdom Hearts Platinum Limited & Trinity Masterpieces
3. Magna Carta 2 Collector's Edition - exclusive to Korea
4. Assassin's Creed Premium Limited Edition - exclusive to Korea, again

5. Mass Effect 1 Limited Collector's Edition NTSC