There are easily too many to list.
Pokemon, obviously.
Fallout, obviously.
Wing Commander (Think WC

rivateer)
Mechwarrior (Think MW:Mercenaries)
UT (Think tournament style elimination like every month, and maybe some on-going battle with the Skaarj so you have NPCs to practice on)
Dawn of War II (Think Warlords Battlecry style heroes level between battles, except you can have huge battlefields and jump-in-while-it's-going-on style come-and-go team battles.)
I can go on. Many games would be wonderful if put in MMO format. Who wouldn't love the AI to be another player, eh?
McCa said:
orannis62 said:
teisjm said:
ranc0re said:
Fallout 3 could definitely work as an MMO.
Fallen Earth might be something along those lines
Even better, they're making Fallout Online. I shit you not.
You shit me so! Link Please...
There's only been about...3 topics about it in the past month.
http://www.escapistmagazine.com/forums/read/9.99596
That one's fine. Or just google it, but this should do.