At Hokkaido Seafood Buffet I had the worst fried spring roll I've ever had and the worst pan-fried dumpling too. The rest of the food that I tried wasn't that much better... they all became unappetizing after a couple bites (or just one bite) with the exception of the stir-fried green beans, but even with those at one point I bit into something hard and unbean-like, like a grain of sand. By the time I got back home I was hungry.
Aside from the food and having to look around for the white rice there isn't anything else I can complain about. (Service was good.) Oops no, they're apparently a chain with several locations in California and on their site they don't list their Pittsburgh location. http://www.hokkaidoseafood.com/locations.html