The collected data of 2010, mostly trough PersonalStats, but Foursquare and Twitter too, is a huge amount. Next to interpreting this data and using the information to create a feedback moment, the data can also turned into art. Nicholas Felton makes a perfect example: his highly interesting Annual Report fascinates me in both visual and informational ways.
Somehow, knowing Python made it easier for me to learn the basics of Processing, within moments I understood how Processing worked. The most beautiful thing I produced so far with about 2 hours of my time:
Note: In case you did not notice, I try to write my articles in E-prime from now on as an experiment, let me know if you catch any errors on my part!