I would say for the regular Xbox fight night round 2 they way the computer went down to the mat and start twitching after a knockout would have us all laughing hysterically every time it didn't matter if you seen it a 100 times it was still great comedy. But as far as game play and replay value not to mention live support would be Halo 2. Now for the 360 I would have to go with the COD/MW series even tho they came out for other systems too but the best one with co op campaign would be COD World at War great game to pick up and play
I would have to say Halo. I kind of miss the days of lan parties with gaming consoles and everyone lugging over their gigantic tube televisions and their heavy original xbox's hooking it all up in the living room. Plugging in so many electronics that it looked like a fire was inevitable and dragging every chair you had in the house lining them all up in the living room and linking up everyone's xbox, and then gaming until you couldn't keep your eyes open any longer and falling asleep to the sound of guys screaming about how much bs that was. The good ole' days
lol vixen my boyfriend in highschool was hardcore into halo.. i never understood until a few years later i got an xbox. everyone used to think he was this total nerd cuz of it but its like a cool thing to do now, its funny. lol