Whenever I get the chance! Preferably when nobody is looking. We took the kids to a ballet Sunday; they loved it and were hopping around trying to pirouette, so cute.
Dance (and music) is all sight, sound and stories without words - pure preverbal emotion. You get to unplug your left brain for a while. Personally, I need that.
Oh, and one of my "cubed" co-workers is an awesome Spanish Flamenco dancer. I wish I could do that.
If dancing was my job, I'd be unemployed. That's how much I suck. In fact, I'd probably be dead from starving on the streets for being out of work so long.
I'm not the best dancer, to be honest, though I sometimes do exercises while listening to music (though it is supposed dance) because I focus on the music (sometimes) instead of how tired I am, it's very tough