There's falafel aplenty on the street carts of midtown Manhattan; and in our opinion, most of it is mediocre: dessicated spheres low on flavor. Moshe's Falafel, which sets up shop each day at the southeast corner of 46th Street and 6th Avenue, is in a class by itself. Here the falafel are wickedly crunchy with moist centers that are radiant with the soft, earthy goodness of mashed chickpeas.