GWeir writes:
"Since "Fistful of Dollars" was a remake of "Yojimbo", perhaps Clint should be
thanking Toshiro instead. Kurosawa's films were remade into westerns a number
of times, not the other way around."
On the other hand, YOJIMBO is adapated from Dashiell Hammett's detective
novel RED HARVEST. More cultural borrowings!