I know its early well we have some great games on the way for PS3 in 2008. Naming my top 5 nominees for Game of the Year are:
1. Metal Gear Solid 4
2. Kill Zone 2
3. Resistance 2
4. Grand Theft Auto IV
5. GT 5 Prologue
Sorry to worthy mentions: Little Big Planet (released in 2008)
GT 5 and FF XIII (which I believe will both be released in 2009).
My personal game of the year in 2008 is Kill Zone 2, I believe it will be awesome. The screen shots look amazing. I know many would say Metal Gear Solid 4 should be Game of the year on PS3 in 2008. But its is just a matter of personal opinion.