I loved De La Hoya's book " American Son " , but thats because he's my AT #1 , ive asked others and they agreed it was a good book . Holyfield's is really interesting but comes across in many parts way too up his own arse , having said its a good book if you can see past it .
Try... Four Kings (great account of the rivalry/careers of Leonard, Hagler, Hearns and Duran) Dark Trade (Donald McRae's account of how he was lured into love with boxing, the time he spent with fighters such as Hamed, Tyson, Toney and DLH) Night Train (brilliant biography of Sonny Liston which is possibly the best boxing bio I've read) Can't go wrong with these three!
Good list there StevenB. I would add 'The Professional' (W.C Heinz) definitely the best boxing noval i've ever read.
Pound for Pound by FX O;Toole is the best boxing fiction I have read.As mentioned Four Kings is worth a look.
I'll have to get hold of Atlas's book, lot's of posters have been complementing it recently! Good shout on the Duran book.
Michael Watsons The Biggest fight for me was an ispirational read of course. I love that era so Nigel Benns book was also very inciteful and an entertaining book