Funny, I stumpled accross the second link as well, when googling.
This looks like lots of fun. I'm actually starting to think about if those flowcharts would make sense in a 3d-pathfinding simulation for my space-game for AI to avoid crashing into asteroids. I haven't found anything that was better-suited for 3d-pathfinding and collision avoidance yet...

Edit: Has anyone ever used flowchart pathfinding?
I was thinking: The example posted by you, Saturnus, has a fixed chart. Now, if I use such a chart around asteroids, to make sure they're avoided, then a spaceship can come from any direction towardas that asteroid. A flowchart would mean that I either have to adjust the flowchart every time a spaceship wants to fly around the asteroid (which defeats the purpose, then I don't need a flowchart and it'll also mess up any other space ships that are currently flying around the asteroid) or the ship will always go around the asteroid in the same direction...?
Any ideas on how I would compute the initial forcefield and how I'd change it, to have spaceships go around asteroids?