Fischer Vs. Spassky: World Chess Championship Match, 1972

A contempory and detailed account of "the chess match of the century", GM Gligoric sets the scene in a very readable introduction to the match and to each game. Detailed as his annotations are, as a very mediocre player I found that they were a tad difficult to follow and could be a bit dry in places, but were still followable and gave an excellent idea of the twists and turns in each game. If you're curious about the specific match or interested in the games of Spassky or Fischer I highly recommend it, but it would take a lot of self effort I suspect for an average player to use it to significantly improve his game.