I have bought so many good games this year...Let's see.
Xbox 360:
1. Call of Duty 4
2. Guitar Hero III
Wii:
Metroid Prime 3
Resident Evil 4 Wii Edition
I will put MP3: Corruption to the number 1 spot. Metroid series are just something so special.
I don't bother listing my last-gen games (PS2, Xbox, GC) to my collection cause there's too many of them. ;)