I have been living in Pittsburgh since 2009 and go to Tokyo Buffet every now and then (basically whenever I go to Ross Park Mall). The first time there was amazing. The food was great, and they have a variety of food. However, I just visited them today again, and I must say (and I hate to say this) that they have become below really average. Even though the food menus look pretty much the same, I would say that their execution was just terrible. The dishes in Chinese food section was not even hot. Salmon sashimi was not fresh. My girlfriend even became sick later in the night because of that.
So, until they can improve to the point they were before, I will not go there again.