I'll start this off with Steven Holl Architects, 'Sliced Porosity Block' in Chengdu, China. The whole mixed use residential complex forms a grand and poetic public gesture and brings light and air into the centre of the project rather than using the usual podium and tower typology. The use of deep well geothermal energy is progressive too. Every large building going up today that hasn't made use of this technology is really wasting an opportunity in sustainability and energy cost control, as it is very hard (impossible?) to retrofit the deep ground loops.