Their chicken is fantastic... I love the Korean Chili sauce! The Vietnamese Herb sauce is also pretty good but I think the Korean Chili works really well with the chicken being fried. If the chicken was baked, I think the Vietnamese would work better. Haven't tried the Japanese BBQ sauce yet.
I don't think they had Ramen yet last time that I went there... So I can't comment on that.
Their donuts were okay to me, I know I am in the minority but I didn't think they were out of this world. Definitely some fancy combinations available but I wasn't super impressed with the taste of the ones I tried. I would absolutely come back here again and again for their chicken though!