For Korean; Kimchi Hana in South Plainfield. 6101 Hadley Rd. South Plainfield, NJ 07080 (908) 755-0777. It's a step above the other places in the area. It's in the giant strip mall with a Macy's.
For Ethiopian; Harrar Cafe in South Orange. 11 Village Plaza, South Orange, NJ 07079, 973 761 5222.
Best of luck with these.