The second duel in The Duellists is shot in the same way as the final duel in Sanjuro.
"Sanjuro" is mentioned.
The character Kevin is jokingly referred to as "Sanjuro" at one point because he is treating a night stick as a sword. He also bounces it on his shoulder, not unlike the way Toshiro Mifune did with his sword when thinking in the Kurosawa films "Yojimbo" and "Sanjuro.
During one of Aang's hallucinations, Momo and Appa fight a duel. Momo's character is based on Kuwabatake Sanjuro, Akira Kurosawa's wandering ronin.