I noticed during the program they mentioned that it hadn't been too long since Ali regained the HW title from Leon Spinks in 1978, so the "This is your Life" show for Ali would have aired in 1978 or 1979. A year or so before Ali came out of "retirement" to fight Larry Holmes in Oct 1980. Prior to the fight with Holmes, Ali had already started struggling with vocal stutters and trembling hands, but got a clearance from the Mayo Clinic, that declared him fit to fight Holmes, sad shit.

In re: Frazier's appearance on the show, this was 3 years after the "Thrilla" in 1975, Joe's last fight with Ali, maybe Frazier was just trying to be a good guy or something, who knows.

It's always sad to see Ali looking so vibrant in his younger days, and so frail now. I know it could be said that Ali lived a great life, and/or 100 lifetimes compared to most of us, but that doesn't make his condition now any less tragic.