(KBS World put the whole episode on Youtube, so you can watch it there. For old episodes, be specific on the comments and I'll try to help you out.)
I've watched most of the episodes (I unleashed my Google ability somewhere around early Jan (?) last year and downloaded the whole thing starting from ep1 like whoaa) There's a lot of good performances of course, and it's hard to pick the ultimate favorite, so let's do a list because that's easier on the post and less of a pain. Also less commentary because I don't want to sound like a broken record praising each performance; just know that they are all so. good. Just click play, seriously.
(I try to limit one performance per artist, -do know this is harder than it sounds- so, again, feel free to hit the comment if you want to ask for other recommendations)
Or, reasons why you should watch the show is because of the awesome performances like these: