The lights are on
Yes!! Medal of Honor: Rising Sun, in my opinion the best Medal of Honor even better than the new one on ps3 Then I would have to say European Assault .
The Spinter cells I don't know about 4 players but I do believe that they are co-op.
I know alot of shooters but, there really is not too many shooters out there that have 4 player support and if they do they're not really any good.