There's way too many epic games to list but the ones that really hit home and developed my love for video games and their different genre's would be
The original Mario Bros on the NES (ahh the wonder of my first video game console
)
Golden Eye 007 on the SNES (Blisters, anyone?)
Secret of Mana on the SNES (my first real RPG love)
World of Warcraft (though Im completely over it now, I still think its one, if not the best games ever made)
COD: Modern Warfare 2 (shootin stuff, thats where it's at
)
COD: Black Ops
And I hope I can add Call of Duty Black Ops 2 to this list next week.