One Great example for above will be Jiri One:
A Japanese Master chef for shushi, I would say if there is only one documentary you will see this month. Let it be this one:
http://en.wikipedia.org/wiki/Jiro_Dreams_of_Sushi
I found Jiro's son to be the more interesting character. The way he talks about being raised in the shadow of a master and choosing to follow in his father's footsteps is touching.