Looks like I'm not sleeping tonight...
Hey Arnold highhandedly predicted the next 5 years of cartoons.
It's all nickelodeon, so I'm not surprised they'd reference one another. Still, interesting find.
Hey, it's Nickelodeon. Half of the people working on one show were working on the others.
No idea what episode this was... but ALL THREE series were on for at least FIVE YEARS together. Get your timelines straight people. So.... Not that exciting?