From the Alhambra to William Morris, patterns can be gorgeous, yet pattern has often been dismissed as "mere ornament" in comparison to painting. We will discover what a mistaken view that is as we look at the ideas that inspired some of the great pattern inventors and traditions from around the world. We'll see that whilst some glorious effects depend on very simple patterning procedures, others can be wonderfully clever, as we watch patterns evolving across the screen in beautiful animations.