I've added some additional comments to "Slides (With Notes)" concerning how to pass in extra options, such as a formatter, to field_vew_field and field_view_value. Also, in the presentation I said that employing field_get_items and field_view_value won't return a render array, which is not correct. field_get_items doesn’t return a render array, but field_view_value returns a very basic one.
It's a pity there's no video of this session. It was the best closing talk I've seen at a Drupal Summit and still has me thinking days later!
Thanks for coming everyone! Slides are up and available with the js snippets. Have some responsive fun!