Best Climbing Experience

To pick out one climbing experience as the best is far too difficult ... My favourite climbing sensation however is much easier to describe. I love it when I am convinced I am 'off', boxed out of my brains, or smearing way out of my depth, maybe just plain stuck ... and then from somewhere I muster up the strength/tenacity/luck to somehow pull it out of the bag and move onwards. That is one hell of a rush.