Very cool! One person's electricity company provides a heatmap of their power usage: http://www.reddit.com/r/dataisbeautiful/comments/35a0wm/my_electricity_retailer_gives_a_heatmap_of_power/ … #dataviz
My daughters sleeping patterns for the first 4 months of her life. One continuous spiral starting on the inside when she was born, each revolution representing a single day. Midnight at the top hour clock).