at the bottom of the post is a link to a zoomable map of the 2010 house election results.
Randita and Interceptpoint did a similar analysis in 2010. I produced charts from their data for them. We didn't have the prestige of Nate Silver at the New York Times, but we tracked pretty closesly with him.
Their website was called Key House Races 2010. Sadly, the hosting site for my maps is no longer available.