HELL. YES. Hell yes, hell yes, hell yes. I do love the Piazzolla; "Adios Nonino" has to be a good start for anybody wanting to listen to more of his stuff.
There was a documentary on his life on TV over here a while back (I think on BBC4 or Artsworld....one of the artier digital channels, either which way); about his classical studies, his sometimes turbulent relationship with his dad and then with his son...quite a character.
This is a good site to find out more about him.