The Freak Brothers comics are a series of time capsules. Having all of them collected in an omnibus illustrates how the authors' (and perhaps America's) attitude towards '60s counter culture changed through the '70s and '80s.
The good: weird, creative, and overall awesome art. Storylines are amusing and some of the political jabs still resonate, although the Freaks (as true hippies) are never really about politics ;)
The bad: as with any piece of pop culture from our culture's yesteryears, racial caricatures (thankfully few) and strong sexist imagery can make reading uncomfortable. It's good to be reminded of the progress we've made as a society, but if you need a reminder that it's not ok to make rape jokes, please don't read this book and instead spend the time in self-reflection or doing whatever else you need to do to clean your brain.
The interesting: as the omnibus proceeds, the Freak Brother plots get zanier and the amounts of hallucinogens consumed skyrockets, but the Brothers themselves essentially stay a group of three grungy drug-fueled hippies squatting in a nameless decaying American city. What does change is the world around the Freaks. The Freak brothers have always lived in a dangerous part of town, but what in earlier episodes seemed like an ideal place for the Freaks to be practicing their dubious lifestyle, in later issues is a grim confining urban jungle. The Freaks are hemmed in, carrying on their circus in spite of a world growing darker. At times I could almost sense fatigue in the characters, the plots.
But at the end of every story, one can always rely on the Freaks to give you the wink of the eye as they light up another joint, keeping the "spirit of the '60s" burning strong.