It blew me away when I first started watching it; I've never seen a show with a similar feel stylistically. The Ricky-isms (link) alone are incredible. My favorite characters are Ricky and Mr Lahey.

Quote Originally Posted by Mr Lahey
We got the key to troutty city, Ran, and Julian's the muscular mayor
The problem is that, in my opinion, the show started to go downhill after like season 4. The characters start to become parodies of themselves (Bubbles, who was once endearing and idiosyncratic, becomes a tired old, re-hashed joke).

I think I might go fire up one of the classic episodes right now, though. Thanks for reminding me.