Ustwo, makers of the beautiful Monument Valley recently partnered with Google to design a few watch faces for Android Wear. They did an excellent job at not only displaying time in a way that is visually interesting, but also reinventing how a watch should tell time. For example, one of the watch face only shows you the time left until your next appointment, allowing you to focus on what you have to do, instead of when.
As we’ve come to expect, this is top notch work. I recommend watching the video to see how they approached the problem.