As for "The Wiz" - It's always been one of those movies that I've "liked" - well, if I happen to come across it while flipping channels, and nothing else is on, I will usually end up sticking with it through the end. Well, almost the end. I also always seem to catch it in the middle of Michael Jackson's "Scarecrow" number. -I think I've only seen the beginning - and end - of the movie just once, possibly twice. Either way, I don't remember much about the opening set-up, and all I remember about the end is Diana Ross running in the snow and not seeming to be cold.
And, yes, "Can You Feel A Brand New Day" has to be one of the strangest - and unjustifiably long(!) - dance sequences every filmed.