Part of a whole family of maze visualizations created in the past day by Mike Bostock:

Maze Generator: http://bl.ocks.org/mbostock/11159599

Maze Solver: http://bl.ocks.org/mbostock/11161648

Maze Flooder: http://bl.ocks.org/mbostock/11167589

Maze Solver with Best-First Search Algorithm: http://bl.ocks.org/mbostock/11189414

(Edit: Best-First Search, not A*.)

It's awesome to see interesting algorithm visualizations in D3 (or other web standards) as opposed to Java applets. Especially as a student who has to do algorithm visualizations... in Java applets.