When I land at Narita Airport (成田国際空港), after I clear immigration and customs, if it's not too late, I always head to Kawatoyo restaurant near Narita station for my first meal.
As with most things in Japan, for American's getting there is a bit confusing.
There are two stations called "Narita Terminal 1" and "Narita Terminal 2". However after those there is a Narita City station.
Get off at the city station, walk down the winding roads ... and enjoy the best grilled eel of your life!!