I’ve been watching the first season of the show and it is funny, with lots of deadpan humor. The characters are pretty fleshed out and have great voices. The animation is different in a good way (what adjective replaces that statement?) and the crudeness adds a level of visual interest.
See http://www.youtube.com/watch?v=2ccP8sUyT4w or http://www.youtube.com/watch?v=zFMRn-TZVGg or do a search or something.