To me, that was clearly a case of Tarantino saying "Hey look at me, I got Sonny Chiba in my f*ckin' movie!" A pretty pointless cameo, just because he could.
When I make my "Kill Bill," I'm going to cast Ah-nuld as the Hot-Dog Vendor in scene 82.
One other thing that peeved me was calling Chiba's charachter Hanzo Hattori. The greatest ninja ever reduced to a swordsmith. WTF?
When I make my movie it's going to be a buddy/revenge flick starring Ah-nuld and Mr. T .It'll be all one liners and go something like this:
Ah-nold: Ahl be bahck!
Mr. T: Stop all that jibba jabba and drink your milk fool!
Agent ONE:CROM laughs at you, milk drinking girly man!
I know I'm not funny but humor me