Bad Stump!

 I ran across this stump recently, and the cutter obviously did not know anything about hinging a tree to make it fall successfully.  You can see that there is no opening made to allow the tree to rotate, and it appears that the fellow hoped to cut it loose from the stump with one cut all the way through from one side to the other.

Luckily for the operator, the top of this black oak lodged in another tree, and all movement stopped, allowing the guy to go home in one piece.

Take a look at the video below by ClintNickerson.  This video illustrates why barber chairs are so deadly.  In Clint's video, the leaner needed to be hinged with a bore cut, but he cut from the outside, allowing the tree to move while the hinge wood was too thick.  Clint utters a discouraging word near the end of this vid, and I can't say that I blame him, but consider this a Language Warning in case sensitive ears are nearby.