got it, played it, love it.
The campaign mode's good, but it really comes alive in skirmish mode.
Fact is, these aren't "skirmishes", these are gargantuan wars across entire continents. thousands of troops, ships and planes clash and annihilate each other, and it's rare for the few survivors of these battles to have the numbers and power left over to hope to overcome the massive defensive networks around the enemy base.
plus, it has dual-monitor support, allowing you to throw a tactical map up on your second screen for the sake of maintaining a complete battlefield overview. Awesome stuff.
plus, the explosions are purdy.