While each season of ATHF has its gems and usually a couple of clunkers, this just may be my favorite season.
'The Clowning' may be my favorite episode ever, and 'Total Recarl' and 'The Last One' are right up there as well. 'Revenge of the Trees', 'The Cloning', 'Broodwitch', 'The Cubing', and 'The Shaving' are also all very, very weird and wonderful.
Overall, the series has worn off a just bit for me from when I was first blown away by it's sheer dada-esque insanity, but the best episodes still transcend to inspired, sublime levels of bizarre, gross, tweaked humor, leaving you both laughing out loud and shaking your head at the audacity and bravery of the storytelling. When your starting premise is a giant talking shake, fries, and wad of meat living in suburban New Jersey, USA how wrong can you go? If you like strange, gonzo humor (Monty Python would be my generation's touchstone) and/or out-there adult animation, you owe it to yourself to give this a try -- and give it a couple of episodes to let your head get into what the creators are doing.