What is a good Co-op splitscreen game for PS3? Also a game to play with the

[Wootwoot1]

girlfriend on both the wii and PS3? Which is better for splitscreen co-op play Killzone 2 or Resident evil 5?

Any other good co-op splitscreen games for the PS3?

And a question for the ladies:

What games are good to play with the girlfriend (who is really just a casual gamer) on both the wii and PS3?

Thanks for your help!