This interactive map is an extremely useful overview of what is happening in physics right now. This is where I am hoping concept maps can eventually go: it is dynamic and effortless. It allows the user to stay on the surface for the big picture or to drill down deep.
Explore the deepest mysteries at the frontier of fundamental physics, and the most promising ideas put forth to solve them.
This is a fascinating resource. One of the many things that this does right is graphically represent the connections between the theories:
The map provides concise descriptions of highly complex theories; learn more by exploring the links to dozens of articles and videos, and vote for the ideas you find most elegant or promising. Finally, the map is extensive, but hardly exhaustive; proposed additions are welcome below.