I <3 Halo:Reach - amazingly fun and best campaign + amazing Soundtrack
I <3 Halo 3:ODST - best soundtrack + Firefight + Coastal Highway and Mombassa Streets, amazingly unique campaign.
I <3 Halo 3 - best multiplayer levels + Forge + best Custom Games + soundtrack
I <3 Halo 2 - amazing huge fun campaign + soundtrack + Fun multiplayer
I <3 Halo: CE - started it all
I get Skullamanjaros almost every headhunter game I play.
Headhunter is one of the best gametypes in all honesty. The feeling you get inside of you when you have 10 skulls, and the mad dash you have to take, it honestly is indescribable, even for a "video game".