Years of computer use visualized

Marcin Ignac (twitter) recorded everything he did on his computer for 2½ years, then created a series of beautiful visualizations based upon the data: "Each line represents one day and each colorful block is the most foreground app running at the given moment. Black areas are periods when my computer is not turned on. Seeping patterns (or lack of them) and time of holidays and travel (longer gaps) can be therefore easily identified."