The 10th anniversary edition of The Office comes with 4 or 5 minutes of commentary before each and every episode (or at least all the first six episodes, which I have seen in a row today...). These commentary sections cannot be turned off, and there is no way to know when exactly the commentary ends and the episode starts.
What is the problem with these commentaries, made by Ricky Gervais, the actors, and others? They are essentially spoilers. For someone who has never seen The Office, they spoil the whole experience, by revealing too much, and by giving too much interpretation right from the authors. This basically destroys any possibility of creating your own opinions and interpretation. And people who enjoy something like The Office certainly has no need to have the characters, the themes, everything explained.
I would have nothing against these commentaries had they been optional. But they are not, and their content spoils the whole experience of anyone who is still knew to the series.
Actually, the amount of self-celebration in the commentaries is so big, that one may get sick of The Office even before seing the first episode.
I suggest buying the older set of dvds, which also comes with the complete series and Christams specials, and spares the viewer from explanation, self-celebration, spoilers, and "authentic interpretation" of this great piece of art.
Enjoy The Office, but buy any other edition but this one.