So many great experiences,for me the list goes:
1.-MGS4
2.-Uncharted 2
3.-God of War 3
4.-Killzone 2
5.-Demon's Souls
6.-LBP
7.-Heavy Rain
8.-Uncharted 1
9.-Resistance 1 & 2
10.-Wipeout HD
Future: 1.-FFXIII Versus 2.-Gran Turismo 5 3.-Last Guardian
4.-Killzone 3 5.-Resistance 3
Honorable mention: 1.-Infamous 2.-Heavenly Sword 3.-Folklore