I like ballroom dancing poses. Although the dance appears to be flowing and spontaneous, the choreography is as precise as clockwork. A good dancer will hit poses that tell the story of the movement. This appeals to the animator in me, as this is exactly the same ideal I try to follow when I draw key frames for a sequence.
Also, it's an excuse to draw a red-haired model. My wife re-henna'ed her hair, which makes her look even more elegant than ever.