First off, I'd like to say I am not a fan of Korean restaurants due to the fact that Hawaii's are ALL EXACTLY THE SAME. So naturally, my family enjoys Korean food. Upon moving to Las Vegas, we found the Koreatown district and became enamored with this place.
We love the hours here, especially during our late night party binges. We refer to the owner as Ama (Mom in Korean), because she treated us like family. Service was impeccable, never a messed up order. And always offers a helping hand when we order takeout.
Prices here hover between moderate and pricey but they are well worth the extra buck.
The food (according to our Korean born eating companion) is the closest tasting to her hometown fare. The Tofu Kim Chee (te-COONG-she-geh) soup is very flavorful and possesses a medium heat. The marinated ribeye is freakin awesome with a slightly sweet twang. I recommend both with high regard.
Mother's is probably the one and only Korean spot I enjoy, probably in the world.