God-Emperor
Deity
EDIT: Argh! Don't read this. Really. Well, unless you want to read something funny in the "stupid things can be funny" sense of the word.
OK, so in the screen shot why do the coastal plots in the Korean territory yield 3 commerce and ocean plots yield 1?
The Koreans are getting 1 and 3 for ocean and coast, he is getting 4 and 5 for a difference of +3 and +2 respectively. There is nothing in vanilla/Warlords/BtS Civ4 that will give the yield situation seen in the screenshot, as far as I can recall.
So, like I said: he's using a mod. It has weirdness related to ocean and coastal plot yields. Rather than something odd with his yields, perhaps it is something odd with the Koreans who are getting +1 to coastal from somewhere without getting +1 to ocean. Or perhaps the default for the mod is that coastal plots give 3, so it is back to something he has that is giving +1 to ocean plots but not coastal or -1 to coastal but not ocean. It doesn't matter - any way you slice it, it is still Mod brand bread. If it has weird coast and/or ocean plot yields, why not a pikeman that can walk across peaks?
, 2
when fortified in a city
from secret Haldol weapon.
from just being around 
when entrenched in Mall
from designer shoe sale.
