DVD_SuperCoasters[DVD: National Geographic Channel – 2006 – 97 mins]. Exploring the physics, geometry and precision engineering behind the world’s ultimate roller coasters. SuperCoasters utilize high-tech launch systems that propel riders to speeds of 128mph at skyscraper heights of 456ft. Through the eyes of engineers, designers and scientific experts, SuperCoasters takes you behind the scenes with a look at the science of the gravity-suspended sensation; traces the quest to build higher and faster coasters; and reveals how the U.S. Navy’s catapult technology may propel coasters into a more high-octane future. ANDY SHINE SAYS: Most interesting and educational, but too lengthy. ANDY SHINE’S RATING: Good / Recommended.