It has come full circle. My coworker from Shanghai was telling me how the last time he went home, one of the hottest restaurants on the scene's signature dish was (American style) General Tso's. I kind of love the cultural apparatuses that have resulted in a dish traveling from Taiwan to NYC to the greater United States to mainland China.
This reminds me of how Americano coffee (IIRC an Italian innovation to imitate American-style coffee) is now served in some coffeeshops in the US, in addition to the original American-style filter coffee.