A few of these questions were too subjective. I don't think questions about what seasons or episodes are better really belong in a "trivia" quiz.
I'm probably going to get a lot of flak for this, but I actually like "The Nitwitting". The spit jar portion of the episode never really bothered me that much, especially when you compare it to some of the gross things you see in Season 6. *cough* The Splinter *cough*.
Library Cards was a good episode, but it was pretty boring at some points.
I personally prefer Squid Defense over Karate Star.