I was afriad this might get buried in the long thread
I hope to answer a few questions brought up here.
Happy Family is indeed the same restaurant from the one in SF on Geary. The owners are the Hans, and they moved the restaurant to Oakland and kept the location at the Geary sight but put one of their daughters in charge. She has since changed the place to an upscale loungy soju bar called Rohan which I recommend for good cocktails.
There are quite a few Korean-Chinese restaurants in the bay area, but I've always found Happy Family consistant and good. You can always find a Korean-Chinese restaurant if you see a Chinese restaurant with Korean writing somewhere or on the menu.
I also highly recommend the Gan Pong chicken or in Korean the Gang Poong Ki. The two dishes that most Korean people order in a Choong-Hwa (Chinese-Korean) restaurant is the Jang Pong, spicy seafood broth with shrimp, squid, noodles and other bits, and the Jajang Myun (Zha Jiang Mian) the black bean noodles. If you can't decide which one to get Happy Family a double deal called the Ja-Jang Pong which has both half orders of each on a double dish. One dish they you may have to ask for that I've seen people on occasion order is Chinese style Naeng Myun - a cold buckwheat noodle in ice cold broth. I'm not sure what the exact difference is between the regular Korean dish and the Chinese one.
I do like Happy Family's Jajang myun, but the small place across the street has better Jajang myun IMHO. It's called Zzang noodles although they still have the signs for the hof brau that previously was there. Zzhang has also one the best poached dumplings I've ever had. They have another location in SF on Geary across from Kaiser near Japantown.