I had an old VHS tape my uncle taped for me and my brother back in the 90s when he had Pay TV (called Austar down here). Anyway, these were the ads from that tape. These were from 1999 I believe.
1. The Secret World of Alex Mack promotion
2. Double Gum Monster ice-cream (on nom nom)
3. Noah's Island promotion
4. Nickelodeon transition
5. Angry Beavers intro card
6. Nickelodeon celebrates the new millenium (2000)
7. Garfield promotion
8. Nickelodeon transition
9. Angry Beavers intro (cut off)
10. Doogie Howser M.D. promotion
11. Go-Gurt - rip their heads off and suck their guts out!
12. Nickelodeon - what makes a friend?
13. Tommy Pickles superhero (Rugrats promotion)
14. Nickelodeon transition
15. Oh Yeah Cartoons promotion
16. Pokemon: The First Movie Pizza Hut kids meal promotion
17. Count Duckular (I don't know why I fast forwarded this - sorry!)
18. Rugrats "The Stork" starting
19. Agent Green outro
20. The Journey of Allen Strange promotion
21. Nickelodeon transition
22. Rugrats intro (cut off)
23. Action Man at Wonderland (before it was torn down)
24. Actual Reality - get outside and be fit!
25. Rocket Power promotion (cut off)