For the last 6 years, I’ve transited at Narita International Airport in Tokyo every time I fly between the US and Singapore.
One thing I’ve always looked forward to for my time in transit at Narita is the Japanese food. The Japanese restaurant in the United Airlines terminal serves sushi and has probably one of the best sushi I’ve ever had. The price is slightly on the high side, but that’s to be expected for prices in Tokyo. They always serve the best cuts of the fish and the raw fish is always fresh and tasty. Either that, or Japanese fish tastes better than American and Singaporean fish. 
This is the Chirashi I had on this trip back. I decided to go for the “super fine” grade which comes with abalone, sea urchin and premium cuts of fish (basically the fatty parts).
On this most recent trip back to Singapore, someone told me about the availability showers in the terminal. I’ve never used this facility before, so I decided to give it a try this time. 5USD gives the use of a reasonably sized shower room for 30 mins. Towels, soap and shampoo are provided. The facility is clean (typical Japanese standard) but isn’t luxurious by any means. What I really liked about the shower is the ability to clean up from the clamminess that builds up on a 10 hour plane ride. I don’t know why I never used the showers before in my last 6 years of flying through Narita, but this would definitely be something I’ll do from now on. That fresh feeling is well worth the 5USD.
