While discussing the merits of insulated glasses, Amanda Clark pointed out these great glasses from Dutch designer AMT (?). I'm not actually sure if they're insulated, but they're quite attractive.
From the designer's page:
the shape of a drinking glass reflects its content: columnar flute for champagne, curvy goblet for wine, short shot glass for straight liquor, stout highball for cocktails. but what if only the negative space of glasses assumes these iconic shapes? that’s the premise of amt’s line of pyrex glass barware. all glasses have the same outer shape, but pour in a drink and the glass’s inner identity appears.
Three of the planned four glasses sets are available at Charles & Marie.