I'm laughing at all the people that said season 3 sucked and left, because season 4 is shaping up to the be the best season. We've got to-notch animation all the way through, good writing, good humor, and what appears to be an actual story arc instead of scattered one-shot episodes.

Honestly, it's been a while since I enjoyed an episode quite as much as I've enjoyed the start of Season 4.