Rover reminds me of one of our dogs. He sleeps upside down, w/ his head hanging down, he sleeps on his back w/ his paws folded down, he sleeps on his belly w/ his back legs spread out... he'll sleep sitting up on the couch w/ his head on a pillow. Sometimes he'll sleep on his back curled into a "J". The best is on the couch, upside down, w/ his head hanging over and his big floppy lips hang "up".
@Pingy, when was the other one?