how many FPS games DON'T have a mediocre single player?

[Vetteman94]

While I think the campaign in Killzone 2 is actually pretty good, how about Resistance:FOM, I thought it had both a good SP campaign and MP. I also liked RSV2, COD4 and Halo:CE

Edit:  And Call of Duty 2:Big Red One(PS2) & Call of Duty 2 (360)