Ong Ga Nae has wide menu and good panchan. Crowded as heck, so get their early. Haven't been back recently b/c of the crowds.
Although not BBQ, their seng galbi dish is really good. It's a pile of think sliced beef and veggies cooked over a pan at the table. See picture in previous post (http://www.chowhound.com/topics/81961)
Ong GA Nae Korean Barbeque
19745 Colima Rd, Rowland Heights, CA 91748