Round 10 of the Battle of the Stitches crochet challenge used the Ripple Stitch as the focus of all the designs.

This stitch tutorial is available for free in the Battle of the Stitches blog.
The easy to print pdf is available right here on Ravelry for only $1

This is a beautiful stitch worked in a single color and is really fun when worked in a variety of colors. It works great when using a variety of yarn also, so have some fun playing around with this stitch and work up something fabulous!