OT: What good RTS games out there have good skirmish modes?

[cincyreds]

I love playing RTS games.

I have Rise of Nations and CC Generals.

Are there any other good games out there right now that offer a pretty good AI and a good skirmish mode?

Thanks in advance.

[Marmel]

What is a skirmish mode?

[sabotai]

I think he means when you just play on a random map...ie, non-campaign game.