Things to do in Tokyo for One Day

So I’m flying to a destination in the Far East from the East Coast of the United States. I’ll have about an eleven-hour stop at Narita Airport, in Tokyo (hey, it was the cheapest flight I could get).

Any thoughts on things to do in that period of time? I know I can get a train from Narita into Tokyo, and that it will take about an hour.

Thanks, everyone.

Mods- obviously in the wrong forum. Don’t know how I did that. Can someone move this to GQ or whatever the appropriate forum is?