CoD 1, because I was a little kid who didn't know any better to get pissed at online shooter games. Just loved the game, no raging. Amazing experience that got me to love the series. Loved the hell out of them up until MW2 (I think the series went downhill from here). Liked BLOPS 1 a lot though. Lost faith in treyarch with this game unfortunately. And WAW was enjoyable without using the MP40, hell the kill times in the last 4 games have been like the MP40 nonstop. Those bolt action rifles are just a blast.
GT:lethaalhawk "Trouble with the trolley, eh?"-Pelican from trolley activity in Spyro 2