DM811

You just click on a spot, and B will plan a route to go there. You can take advantage of that; you can put draggables in his path and he's climb them to continue. You can even make him go to an upper level with a completely different terrain, and he'll keep following his path, no matter how many blocks he has to climb or move.

So that's the auto-pilot? Ok. I thought maybe it was whenever you put B in certain situations or positions, and he automatically adjusted to that obstacle, etc... I've also read in a few conversations about hidden techniques/ moves B has the ability of doing.

Yes, he can do a lot of things, although most of them are variations of the autopilot (jumping, moving, headbutting, kung fu, etc.)