I love 8-bit christmas tunes, though I prefered NEScover.
There's just something about 8-bit sounds that I love. I think it might be nostalgia, but considering I never had an original nintendo this is doubtful. It might just be that I love all goofy old synths (especially the Hammond Organ though how that relates to 8-bit sounds is beyond me). It might also be that I love all video game music... whatever.
In any case enjoy the sweet sounds of the 8-bit masters.