Hammer: StarCraft is one of my favorites. That and Age of Mythology (much better than WarCraft3). StarCraft has alot of feeling (very rare thing in PeeCee gaming). AOM is the only game that made me abandon Age of Empires 1 (AOE2 included).
Command & Conquer, code red and all that stuff is just hype. Dated on release, no fun in the long run (compared with the alternatives).
Apart from x86 gaming and some raytracing under RH, I'm a hardcore A1200 user (typing this on my A1200).