Whats your GoTY so far?

[naznatips]

1. Orange Box (PC)
2. Metroid Prime 3 (Wii)
3. Bioshock (PC)
4. Halo 3 (360)

However, I expect that my actual choice for GOTY will be between Orange Box and SMG. SMG isn't out yet though so I can't be sure.  Also, considering how much I loved KOTOR, Mass Effect has a chance too.