I've noticed some Easter Eggs I'd like to point out. Just mention any others you've found.

1. In "Chimps Ahoy!" there is a Goofy Goober backscratcher. Goofy Goober's was also in the movie.

2. This episode hasn't aired yet, but I read the description. It's called Driven to Tears and Patrick thinks that Mrs. Puff is messing up Spongebob's tests on purpose, but that's clearly not right, because Mrs. Puff wants Spongebob out of her life, so she would never keep him in boating school.