Animated textures sure are changing the way we think and feel about minecraft, aren’t they? This video shows you a ship sailing on sand and a train travelling along tracks. It also contains an explanation of how the effect is created, so you cam make your own sailing ships and complex minecraft vehicles.
(Click the image to see the grass move!)
The upcoming redstone update is going to include animated textures. For the most part, people plan to use them for things like waving grass and other terrain specific iterations that will make the world seem more active and alive. Other people plan to create movie theaters with animated excerpts from He Man. Pretty sure both uses are completely valid.