I liked the good semblance of strategy in Dawn of War. You're an aidiot to just mass Heavy Bolters or Rocket Launchers, and then of course there's proper application of force. You can't just mass. PLUS, turtlers get pwned, which is a load of fun.
Nothing, however, beats Masters of Orion 2.
Except perhaps Morrowind. =p
Play a Microsoft CD backwords, and it plays satanic messages. Play it forwards, and it does something worse - It installs Windows.