Street Food Tour For New Restaurant
Well.. this isn't NYC but you did say from around the world. In which case, you must consider all kinds of Chinese dumplings and bao zi (guotie, xiao long bao, sheng jian bao) and ma qiu (sesame rice balls). Also, the scallion pancake with egg: http://chowhound.chow.com/topics/338677
Loved eating these in Shanghai!