Here are the newest additions to The Best (& Most Intriguing) Resources For Learning About The State Of The Union Message:
The ASIDE blog has a useful Visualizations To Teach The State of The Union post.
Bing announces interactive State of the Union site, Bing Pulse is from The Washington Post.
provides access to the corpus of all the State of the Union addresses from 1790 to 2012. SOTU allows you to explore how specific words gain and lose prominence over time, and to link to information on the historical context for their use. SOTU focuses on the relationship between individual addresses as compared to the entire collection of addresses, highlighting what is different about the selected document.