You're thinking of Jiro Dreams of Sushi.
That's the documentary that inspired me to try Michelin starred Sushi restaurants in Japan. I went to Jiro's son's restaurant, which is by all accounts better, but nobody will say so because they don't want to disrespect Jiro while he's still alive. It's a Japanese culture thing.
My father asked me why I spend so much money on raw fish and rice.
I tried to explain to him that the high-end sushi restaurant experience is really a magic show that also includes food.
Have you heard of the placebo effect? Shamans "treat" their patients with practised rituals that make people feel better. Sure, nothing has ever been cured through such methods, but it sure does feel nice!
I have a personal pet theory that this is a side-effect of our evolution: little kids that sat quietly mesmerised watching the elders perform their arts and crafts would pick up the skills and eventually master them themselves. Kids that didn't sit quietly didn't get to be as skilful and would in turn fail to be good parents and hence had fewer children.
Some people call it ASMR, which is a fun term to search for on Youtube if you can't sleep at 11pm.
Watch any magician, or master craftsman at work, and you get the same tingly feeling on your scalp. You sit still, quietly mesmerised as you follow the swift and sure movement of their hands.
THAT is what good sushi is about. You sit at the table with the sushi master in front of you and observe as he slices the fish with rhythm and precision. You're entranced as he picks up the rice, moulds it, applies the wasabi, places the fish, and coats the assembly with sauce. It's like watching a magician dealing cards!
People pay hundreds of dollars for a magic show in Vegas. In Japan, you get the same experience except you also get fed in the process...