I'm interested in using graph databases to model history and the humanities. I guess knowledge management, which is something I find RDBMSs are weak on. Not due to the schema, but because if you want to make relationships between anything possible, you end up with one table containing all nodes, and one containing edges. Which if you have multiple types of node (e.g. People, Places, Battles) gets very messy.

I'm keen to hear from anyone who's worked in this field.