This book is a treasure.
It isn't for everyone— the author has a twisted sense of humor, and there is a lot of sexual and morbid humor. But the comics are just incredibly rich in their stories, and demand repeated readings. The author loves to take a cliché and turn it on its head. The artwork is also very impressive for a webcomic; it comes in a variety of styles, from very minimal figures to rich watercolors, and even spot-on parodies of other comics and other visual media. All in all the book is a lot of fun to flip through. It will probably stay on my coffee table for a long time.
Many (indeed, most) of the comics still appear on the web, so you can read them to get a taste for what the book is like. Some of my personal favorites: "Guntron Alliance Force", "Mrs. Hammer", "Refridgeron and Magnimus".