data.gov

I am always on the lookout for useful data sources for training in statistics, so I am excited that data.gov has opened for business. The purpose of Data.gov is to increase public access to high value, machine readable datasets generated by the US Government.

This is a great initiative which I look forward to explore when I am not in a tiny airport at 3 am (but hey: they have free wifi) and which I hope other countries will take up.

Are there other catalogues of data sets that you use?