This interactive histogram is brilliant. The NYT data visualization folks never fail to impress.
margins.swf (application/x-shockwave-flash Object)
coworker just showed me this fun politics blog http://www.fivethirtyeight.com/, not really data visualization like that, but good stuff.
This is a blog on artificial intelligence and "Social Science++", with an emphasis on computation and statistics. My website is brenocon.com.