Your other games on your pc besides wow.

I've been thinking lately of putting on maybe another game on my pc for something to do. Call that whatever you will but sometimes wow gets a bit much, and I'd like something else to keep be occupied when not raiding, well still keeping on my guilds vent channel in the day or evening.

So really was wondering, do you have any other games on your pc besides wow that you sometimes play, like a single player game or something. On my old pc before wow (years ago) I played sims 2 A fair bit, but that seemed to take up a bit of system space. And given this pcs a vista, I'm debating if there be enough room on my pc for wow and say sims 3? Or should I look at something else smaller.

Also I got warcraft 3 but played though that enough.