What 360 games have 2 player co-op (for playing split-screenon the same system)?

I want to get some co-op games so I can play through the campaign with a friend on the same system split-screen.

What  games are there like this for the 360.

These are games that I think are like this:

-Gears of War

-Rainbow Six: Vegas

-Marvel Ultimate Alliance 

Thanks for any info. 

gears of war, perfect dark zero,i've heard that GRAW has some especial co op missions, not so sure anyway

also the halo series have this feature, if u wanna try some retro stuff (they are really good)

i know you can on gears and r6v im not sure about marvel ultimate alliance thoughjhotmann

I thought you could in UA, I could be wrong though.