I'm a fan of the genre "sleek and elegant UI/product concepts which are actually completely impractical in practice". I once tried to replicate the Tron Legacy computer UI as an OpenGL application and even wrote a full GPU-accelerated terminal emulator to be the center piece. It had an audio visualizer, CPU usage graphs and a 3D cube visualizing a Perlin noise plane which communicated nothing of value at all. But it looked cool.