At The Fights by Howard Schatz. It's a giant book filled with the most gorgeous boxing photography ever captured along with brief interview excerpts from fighters, trainers, promoters, and other professionals involved in the sport.
Wladimir Klitschko is my favorite fighter and my boy loves the portrait of Mike Tyson. He's only 2 years old, but he'll turn the pages in the book until he finds the Tyson picture so he can shout at it. Then he points at Tyson's teeth, then at his own teeth. It's pretty amazing