Tax Foundation has just posted a heat map about the State Beer Exercise Tax Rate in 2013. Check the following heat map image and you can see the latest tax rate and the ranking within the US for each state.
Actually more details can be inserted to this heat map by adding interactive features, and make the map more lively. Annotations of the State abbreviation can be replaced by tooltips, and details can be added to the map by inserting description box.
Clickable heat map is the trend of mapping data as detailed information can be inserted which various content types (e.g. images, videos, external links), for example the US heat map that showcases the distribution of Democratic Senator supports same-sex marriage.