I started Dukan over a year ago and lost over 5 stones in a year and was really committed to the diet. Then my 40th happened,and I thought what the heck and I then went by the wayside over the last few months and have put 2 stone back on - and not because of the diet, because I started to really binge eat the wrong foods, chocolate, sweets, chips, KFC's (basically I nearly inhaled the food - but that is due to my own relationship with food rather than the failing of the diet) - I bought this book to help try and re-invigorate my mojo and I have to say, if you are thinking of doing the Dukan diet, buy this book and not the paperbacks. This is more user friendly - you can see pictures of the recipes and there looks some absolutely gorgeous stuff in there.
Last Christmas I was on the Dukan diet and coped really well and really stuck to it, so I'm not going to use it's nearly Christmas as an excuse to start the program again.
The diet works, if you are in the right headspace and if you can only afford one Dukan book, this is the one to buy in my humble opinion.
Good Luck and may I see less of you next year :-)