but what of fathers/sons?

it's something that i think can't be ignored due to a couple of key pieces:
-consider the scene between Young Joe and Old Joe in the diner which really plays like a father and son
-the relationship between Kid Blue & Abe
-young Joe & Cid
-There's an interesting inverse(or mirrored) Oedipal things going on with the Old Joe wanting to kill the son while Young Joe beds the mother.

There's a lot of really interesting stuff at work