StarCraft (Brood Wars, SC2 WoL, HotS, and LotV) has been a long running addiction. Warcraft and Warcraft II were as well. I never got on that well with Warcraft III; the supply limit tax really annoyed me. At least that game spawned DOTA.
LAN party pictures with StarCraft would be awesome fun to see. I know I had a few SC2 pics with SpartanEvolved, MasterMario, and BlueVoodu somewhere!