Jointing a Chicken

If you wanted to build a chicken out of its constituent parts, in some sort of Dr.Frankenstein inspired taxidermy episode, then it tends to cost more than just buying a chicken.  If you've bought and roasted a whole chicken then there is a lot of stuff you can do with the leftovers (I'll probably visit this theme on Sunday), but if you can joint a chicken then you have two breasts, thighs, wings, drumsticks and one fresh carcass.  That's a lot more options for a lot less money.

I followed these instructions: The ever helpful BBC show me how to joint a chicken
With a sharp knife and: A Christmas present from my Dad similar to this, but on reflection maybe not as good.
To produce this:

With only one wishbone related injury...