Currently I’m participating in the Quantified Self summer school at the CIID (Copenhagen Institute for Interaction Design). The focus lies on the visualisation of complex data sets, currently a hot topic in science. As workhorse the Java based environment Processing is used, which is widely known in the visualization community. (For some vivid examples check openprocessing.org).
To get a better grasp of Java in general and processing in particular I wrote a small package that visualizes all the places you have visited with the corresponding color mood (=the most prominent color in the pictures you took).