1. The way dogs racing after a ball or each other or just running for sheer joy at being let off the lead tuck their legs right under themselves and for a moment seem to hang in the air.
2. Coming home and realising that you've caught the sun a little.
3. Dr Who, because you never quite know what sort of story will be presented - last week it was a sci-fi murder mystery. This week it was a tale of Victorian-zombie-spiritualism.