2 hours in Narita Airport
 

We have a short layover in Tokyo airport. Anything we should definitely see or do there?

Catch your next flight. You don't have time for much more.

There is a sushi place in the United terminal that many people love.

That sushi place is near about gate 33/35 area. I have not tried it, but everyone does say it's some of the best sushi. IF you like sushi. Otherwise, there are loads of shops to peruse.

Two hours is just long enough to get something to eat and do a little window shopping. There is a free art space/museum just beyond the United club area that has different exhibits. If you can have access to one of the lounges, it is long enough to have a shower, eat a snack and do a little email or reading.

Keep in mind that you have to go through a security screening, even when you are just in transit, and the lines can sometimes be quite long. (you do that before you eat or shop, so at least you can plan your remaining time)