Of the acting and directing world over time. This interactive piece from the New York Times charts the networks between actors and directors. The networks on the right while examples and stories are located to the left. When you scroll to an example, the network to the right is highlighted in yellow. If you click a link, you are taken to the IMDb page for that particular film. A really nice piece.
Credit for the piece goes to Mike Bostock, Jennifer Daniel, Alicia DeSantis, and Nicolas Rapold.