I'm a huge fan of the series, and i enjoyed reading this book. Some of the stories are pure gag stories, while others add somewhat to the plot (don't expect major plot tough). The stories are hilarious, and stay true to the spirit and humor of the show.
The only thing anoying me (and dragging this down to 4 stars) is the constant shift in art style, however this is something that can not be avoided with this kind of collection, having so many different artist work on the same book. Most of the artists however do a fantastic job, some may be going a little to far away from the original art style, but i still like most of it, and there are only a couple i actually dislike (sorry to any fans of his out there, but i simply do not care for Corey Lewis' art). So while the shift in art is anoying me, the quality of the differet art styles keeps it to a minimum.
So to all the Avatar fans out there, buy this book, but don't expect more than it is: a collection of short side-stories.