After the cast was pared down for season 2, the show had more "very special episodes" than you could shake an afterschool special at. That did last, IIRC, through the Edna's Edibles years. It's been a while since I've watched anything past season 5, but IIRC, the show did lose the "issues" episodes around the time the Over Our Heads era began. Well, except for that one time in season 9. /still haven't seen that episode, because Nick at Nite wouldn't air it,. //Set shipped. hopefully, it'll be here on Thursday or Friday.