PBS has been airing this regularly. For some reason, when clicking through channels, I always end up at the Jackson5 part.
And no matter how many time I watch MJ do the Billie Jean routine, I can feel my blood racing, and it's like watching it for the first time every time.. Truly amazing. And you are right, the whole program is incredible, Smokey, the Supremes, Marvin, Stevie, on and on...