Behind a very unassuming door is the unassuming Customer Service Center. If you're local and need to get a repair you can bring your Nintendo there, and if you're like us and from out of town, you can take a sort of Gamer's Pilgrimage there. The two staff members working there were incredibly knowledgeable and friendly.
As this is a working customer service center not a tourist/fanatic stop and shop, the "center" is nothing more than a simple room with two small seating areas--featuring large statues of Mario and Pikachu. There are a few games to play and a small display case of random Nintendo memorabilia through the ages. Aside from being a Customer Service Center and a waiting room for patrons , this place also functions as a shop (though I'm sure you could buy better Nintendo paraphanaila at the New York store) there is a small selection of Nintendo merchandise for sale. It's definitely not a "you have to see this or you'll regret it" place, but if you're a fan it's cool to check out--even if just for bragging rights--to add to your gamer street cred.
In any case, here are some photos: