Kimchi is like a main side-dish, kinda like how rice is for most Asian countries, and is served like so over here in Korea.
It's vegetables with a variety of seasonings, and to me it has a good spicy/sour taste. It's always delish with any of their food, like :
Bibimbap - Rice topped with seasoned vegetables such as spinach, mushrooms, sea tangle, carrots, bean sprouts, and served with a dollop of red pepper paste. I also like this one served with beef and egg on top as well.
Bugogi - Thinly sliced or shredded beef marinated in soy sauce, sesame oil, garlic, sugar, green onions and black pepper, cooked on a grill (sometimes at the table). I personally like mine with chicken.
Good ol' kimchi.