I've eaten there twice. The first time, I got their General Tso's chicken, served on a bed of spicy spinach noodles. It was their special for the night... not on the menu. This was several years ago.
On my trip in January of this year, we decided to eat dinner here again. They had some type of General Tso's combo. I explained what I had a few years ago, and they made it for me. The noodles weren't as good as they were years ago (came out a bit dry), but I loved their General Tso's chicken. Not sure why it's not on the regular menu, but they seem to have it on the specials on a consistent basis.
But, as everyone has been commenting, the food was good, and the service was great. AND, it's one of the few places you can get a walkup reservation at EPCOT.