The Washington Post looks at the shifting national budget over the past 40 years. Be sure to keep scrolling past the first overall to see the funding for departments separately. The consistent vertical scale works well.
Shifting national budget
Chart Type Used
10 Best Data Visualization Projects of 2015
These are my picks for the best of 2015. As usual, they could easily appear in a different order on a different day, and there are projects not on the list that were also excellent.