Well I'm trying to beat out my friends because we have a little comp to see who has the best game so I was just wandering if anyone has any suggestions:D

For the best online it is call of duty 3
I don't know what the fuss about gears of war is/was but the fact your buddy can drop in and play campaign is cool
Project gotham racing 3 is sh*t
Nfs carbon is good
Fifa 07 is good
Saints row is good
Svr 07 is good
Dead rising is good
...
Can't think of any more off the top of my head but I hope this hepls!

Crackdown is great!

I got to admit I am addicted to gears online. Call of duty 2 held my interest for a long while and the game that had me held for months was Dead Rising.

The best game for xbox360 hands down has to be gears of war and crackdown "good graphics"

Crackdown is my all time favourite game, hours of endless fun, especially online.

HALO 3!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Halo 3

Motogp 2007
Halo 3
Dirt
Rising dead
Fifa 08

for the best online it is call of duty 3
i dont know what the fuss about gears of war is/was but the fact your buddy can drop in and play campaign is cool
project gotham racing 3 is sh*t
nfs carbon is good
fifa 07 is good
saints row is good
svr 07 is good
dead rising is good
....
can't think of any more off the top of my head but i hope this hepls!
hmmm your weird...
gears of war pwned and halo 3 pwns even more =S

Personally, I have played on most of them games and overall I think Gears of war is the best because it will never let you down. Its even better online. But I suppose different games suit differenet people. :D

Well I think that your best bets would be:

Call of Duty 4
Gears of War
Guitar hero 3
Halo 3
Crackdown
Dead rising

Note:
The new NFS prostreet is really not worth it.

I think the best games are
Call of duty 4
Gears of war
Halo 3
But hey I got the ps3 so what do I know

Halo 3 hands down (unless you suck at shooters at which point you will hate getting online)
Forza 2
Crackdown
Assassins creed is fun
Guitar hero 2 or 3

Gears is cool and all but onilne its all about host. Way more then any other game. :( sad cause otherwise it would be awesome

Gears of War...

My favorite games for the 360 are:

Bioshock (absolute favorite)
Call of Duty 4
The Darkness
Elder Scrolls: Oblivion (great RPG)
The Orange Box (Half Life 2)
Assassin's Creed

Portal 2 all the way!!