is a lot smarter now than it used to be. You stopped watching during arguably the worst years, so I don't blame you for quitting, but there have been some amazing episodes ("Grounded Vindaloop!") since then and even some great full serialized seasons like 19. 20+21 weren't too hot overall, but the season that just ended was pretty damn strong. PC Principal knocked up Vice Principal Strong Woman and now they've got PC Babies. It rules.
Also, "Imaginationland">>>"Bigger, Longer and Uncut"