Stack rocks up into nice little towers, film yourself pushing them over, and then reverse the film. Sounds neither difficult nor likely to be especially interesting, right?
Er… no, sorry, wrong. Do it right, and the result’s peculiarly beautiful. ‘Rock On, Rock ON: Balancing point’ is the site, with the trailer playing at iFilm. I’m not sure I could watch an hour of this, but I’ve had the short on repeat for ages now. Do also check out the gallery of balanced rocks.