http://espn.go.com/video/clip?id=espn:12603685
I sort of agree with him, but I still put Chuck Daly up there.
Jackson was a great ego manager, but he divides locker rooms and really actually coached totally stacked teams to les. Tex Winter deserves a lot of the credit for the Xs and Os too.
Red revolutionized the game by using a lot of black players back in the day. Him centering the entire defense around Russell, then using Russell's outlet passes to start fastbreak put a whole new dimension to the game. Sure, some of what he did is being done by high school coaches now, but he developed it and popularized it.
Pat Riley was a great coach, fantastic manager of egos, and is a master architect. He had a tendency of wearing his players out over time though. He left the Lakers with reports that players were starting to tune him out, he never really got the Knicks over the hump despite all that talent, but he did popularized thug-ball with the Knicks despite him saying that he would like to see an up-tempo game when he was broadcasting with NBC right before he became the Knicks headcoach.
Pop had great rapport with his players, he develops them, he takes inputs from many sources, he doesn't let his ego get in the way of winning, he builds the teams, and he has amazing longevity on one team. He took things from Sloan, Euroball, D'antoni, Brown, Nelson, and countless other coaches and made it his own. He transitioned the Spurs from the twin towers to the Duncans to a defensive juggernaut with balanced scoring to a free flowing offense over the span of less than 20 years, with Duncan as his core. The versatility and ability to adapt is amazing.