I love a good graph, as you know. One of my favorites is at the top here, and it shows cross references across the Bible. It has been my desktop screen image multiple times. He has some other work beneath it that is also interesting.
There are plenty of Biblical charts and graphs available online if one searches for them. That one is the most beautiful one I've found, but not really the most useful. This one shows the leaders of the two kingdoms and the prophets that assisted them or called them to task.
If charts and graphs aren't your thing, there is still plenty of geekery applied to the Bible. Check out The Brick Testament, which tells the story of salvation with Legos.