Taiwan Cafe is the best place you can eat in Oakland. Maybe even all of Pittsburgh. Everything I have ever ordered from here was good. Their sushi is delicious, fresh, AND inexpensive.
Although it looks/smells dicey on the way down/outside, you're in for a treat. Choy is the friendliest worker you have ever met. He will always remember you and your order. It's a great touch.
Tcafe is a Pittsburgh staple. Go, eat, and enjoy. And then buy a six pack.