One of this year's most heavily promoted design debuts was Go, the world's first chair in magnesium, a metal lighter than aluminum. For a humble stacking chair it wasn't cheap $700 and up but Go has a lot going for it. The spindly silhouette by designer Ross Lovegrove has the glamour of liquid mercury. Just sitting, the thing looks like it's launching into warp drive. An overhyped one-season wonder? We think this chair has legs.