Well not all shows, there are shows that stay the same for basically their entire run. TMS was a different story, it was eons different from the rest of the series. Especially Gonzo who was a child basically, and I cringe at how he looked, talked, and acted in season 1, and am really happy he went on to be the Gonzo we all know. The plots were not really plots in season 1, more like running gags, take this season 1 episode Candice Bergen against a season 2 episode, Judy Collins. The season 2 episode has a plot crucial to the episode, J.P. Grosse is going to tear down the studio. The season 1 plot is Fozzie randomly throwing or pouring stuff or making random jokes just to mess with Kermit, it could have easily been replaced with another season 1 plot, and there would be next to no difference. Now, in season one's defense, from the Avery Schreiber episode on it did have real plots though it was still deformed. Even though, season 1 is still good, but I would greatly prefer the rest of the series over the first season.