The best place I know is planetdreamcast.com/orochinagi/ and go to KOF'02 forum. In their is a stickied post of KOF'02 match vids from all over the world. There's a retarded amount of them but you can save time and check out the Japanese ones which are crazy.
KOF Cyberfanatics have a lot KOF'02 combo vids as well.