I know this is not what you as a genealogist would like to know about the 2010 Census. The household and individual data will not be released until 2082 because of privacy concerns. However, what is now available is pretty nifty. Unfortunately, my skill as a blog designer does not allow me to display this widget fully. However, if you click on a year in the decade bar at the bottom and scroll your cursor over the over one of the few states I was able to display, you will get some idea of the interactive features available.
For the full effect and to be able to see all states, go to the US Census site. Additional information is available at a partner site set up by the American Library Association.