That's because they got new writers.
All the old ones left because they said they were going to cancel the show after the movie.
Then that bitch didn't do it.
aye. i loved old seasons 1-3 of spongebob and even the movie. it kinda went downhill fast after that, and I stopped caring for it.
My favorite nick shows as a kid were Fairly Odd Parents, Rugrats, and Jimmy Neutron. I never really liked the live action shows, except for All-That and Drake and Josh.