What was Nickelodeon's first show?

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Tags

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2. #series
3. #canadian
4. #television
5. #originally
6. #debut
7. #adopted
8. #becoming
9. #shows
10. #first
11. #program
12. #slime
13. #feature
14. #american
15. #green
16. #comedy
17. #later
18. #sketch
19. #including
20. #double
21. #primary
22. #featured