Look up, marvel at the ephemeral beauty, and live life with your head in the clouds!
Thus finishes the Manifesto of the Cloud Appreciation Society, who are pledged to re-awaken our sense of wonderment at clouds, Nature's Poetry.
They have galleries of cloud types (but they don't have the Death Valley rolling cloud in there, I saw some pics of that a couple of years ago …), clouds that look like things (see the Dove in a Hole for an example), and of course you can buy the book (UK at the moment, US release soon)