Best Co-op Games??

Hi People!

I have been wanting to play some local Co-op games, all i have right now is Halo and GOW. Are there any other fun games with a great Co-op worth the money and time?

Thank you!!

left for dead 1/2 are great co-op games. really fun to play with someone who's never played before and they freak out when zombies come around the corner lol.

Borderlands is lots of fun...Army of Two and Army of Two 2 are great too...

left 4 dead 1/2

rock band

crackdown 2 (a friend brought this over, it's a blast)

splosion man

castle crashers

gears of war 2

both Army of Two games, Borderlands, Left 4 Dead both Halos oh and Rainbow six vegas 2

I know it is older and not a shooter but Kameo is alsogood pick.

Please, use the recommendation thread.