Kinokuniya Bookstore
10 West 49th Street (Rockefeller Plaza)
New York, NY 10020
Phone: 212-765-7766
Fax: 212-541-9335

Like its twin franchise at Yaohan Plaza, this store has an excellent selection of manga and anime/manga art books, as well as Japanese-language books of all kinds.  Most of the anime-pertinent material is located on the second floor.