1. Hey Arnold!
When Stinky and Sid walk past a comic book shop, a book titled “SPONGEBOB” can be seen on a shelf.
2. Foster’s Home For Imaginary Friends
After Mac gets kicked off the bowling team, he walks past the shoe rental where there are three men who bare a striking resemblance to the characters from “The Big Lebowski.”
3. Drake and Josh
Among the fictional films advertised on the Premiere Theatre marquee is “Now She’s Carly,” a subtle shoutout to actor Miranda Cosgrove’s new role in “iCarly.”
The toys on the shelf behind Chucky look strangely similar to the daleks from “Dr. Who.”
5. Fairly Odd Parents
Creator Butch Hartman drew himself into this comic book scene.
6. Blue’s Clues
See that snail by the coatrack? It appears in every episode of “Blue’s Clues.”
7. Spongebob Squarepants
When Spongebob and Patrick take flight Sandy’s rocket, a book titled “2001” may be an homage to “2001 A Space Oddessy.”
8. Angry Beavers
When Norbert and Dagget get a job at a snooty French restaurant so they can afford a collection of monster masks from their favorite movies, a quick shot reveals Helga from “Hey Arnold!” is among them.
9. Power Puff Girls
While rifling through a pile of old clothes, Blossom comes out looking like Cartman from “South Park.”
10. Full House
The poster in Uncle Joey’s bedroom will later appear in Joey and Chandler’s apartment in “Friends.”
11. Phineas and Ferb
When Perry goes out on a mission, an homage to “Hercules” can be spotted on a Grecian urn.
12. Rocko’s Modern Life
Rocko’s boss’s explanation for why being on time is important in the work place includes the steps “MC Hammer”—a possible tribute to Nickelodeon’s sister company, MTV.
13. South Park
There’s an alien hidden in nearly every episode of “South Park.”