Bizarro Episode: Even for SpongeBob standards, "Squidward in Clarinetland" might quite possibly be the weirdest episode of the series at the time of its release.
Broken Base: Depending on who you ask, it's either one of the best episodes of season 7 for its unique imagery and plot, or one of the worst for being more Squidward torture.
Epileptic Trees: A common theory passed around is that the entire event had taken place in Squidward's head as he slept (with PhantomStrider suggesting a gas leak).