What makes this slightly more interesting than your average TV trope is the fact that it is uncompromisingly ridiculous: you are not going to believe Bill Hader is a killer, and that's partly the point. But the insistence on gimmicky weirdness and Coen Bros. sense of Americana is extraordinarily annoying. By the end, this series succumbs under the weight of its own lack of an original vision.
I don't know if HBO had their interns suck/lick the reviewers' cocks/pussies or if HBO paid off the reviewers, but I don't get all the raves for this show. Didn't buy Hader as a hitman, didn't buy him as an actor. The supporting actors were game, but the show's tonal shifts didn't work for me. At all. I prefer Dexter's first 4 seasons to Barry.