In the tradition of creating useful and engaging network visualization tools for various systems such as Amazon and Google, TouchGraph is now leveraging the power of the booming Facebook platform with its new TouchGraph Facebook Browser. The tool allows users to see how their friends are connected, and who has the most photos together. Users can also explore their own personal networks by graphing photos from anyone's album, or view the connections between members of a group. The interactive tags feature seems also quite interesting.
Make sure you have the latest version of java and a Facebook account to take advantage of this tool.