I just finished the book and found it to be insightful, well-researched (almost absurdly so), and funny if you appreciate simmons brand of humor...which some of you obviously do not. I happen to enjoy it.
Some of the best parts of the book are firsthand interviews with guys like Isiah Thomas, Steve Kerr, and Bill Walton. People who have played and worked in the game on multiple levels, and the stories are simply fascinating.
He's definitely biased towards the celtics, but it's not so much in his evaluation of their historical stars, but more in how he treats some of their role players throughout the years that are overly glorified.
His chamberlain vs. russell argument is well researched both statistically and qualitatively with views from people who played with/against him. This is not an area of bias...albeit an opinion that can be debated (i personally agree with him on russell...and i'm a chicago guy and bulls fan, so no bias here).
As Duke fans who really understand basketball, I'd think people on this board would generally love his view on basketball greatness that lauds/values the Scottie Pippens, Shane Battiers, Bill Russells, and the like...
As for his dislike of Duke, people need to get over themselves. Virtually no one is a Duke fan...I live in NY, which is a haven of Blue Devils fans, and almost every non-alum I know hates our hoops team. Despite our recent lack of tourney success, we're still the Yankees of college hoops...and that's a great, great thing. The fact that Simmons makes the occasional crack about our team is really not a reason to not read/purchase a great book.