This is a great book, one of the classics. However, I do agree with the reviewer who complains that there isn't enough stuff about the actual climbing. Not only did Rebuffat do many famous ascents, but he also climbed with the greatest French climbers of his generation, most notably fellow Annapurna expedition members Louis Lachenal and Lionel Terray -- and he basically never mentions them. It is as if Gaston was too humble, and thought no one would be interested -- but we are, we are!
Anyone who enjoys this book needs to run not walk to find Lionel Terray's "Conquistadors of the Useless" which is very sadly out of print in English (although still a mainstay of French climbing literature). Not only do you get great stories of Gaston himself from Terray (including their ill-starred and hysterically funny attempt to run a farm together), but you also get all the blow by blow descriptions you could ever want of the big climbs -- the Walker, the Eiger, etc, -- as done by the legendary Lachenal-Terray rope.
Also, look out for "True Summit" by David Roberts, a new history of the Annapurna expedition which is due to be released later this Spring. And if you read French, try the two hot books in French climbing circles these days: Rebuffat's recently published biography and Louis Lachenal's memoirs ("Carnets du Vertige")
... not to mention Rebuffat's several other books and, yes, even movies!