Quote by blueluigi
Spongebob Squarepants premiered on Nickelodeon. Boy, that was a show that I loved throughout the years, and hard to believe they're still making it.
Well, consider that Rugrats is still Nickelodeon's longest running cartoon series (IIRC it ended in either 2003 or 2004, and started in 1991.) Then again, I don't think spongebob had a four year no-new-episodes slump either.
Because people still want annoying yellow sponges, it just may surpass Rugrats as the longest running nicktoon.