There were many I enjoyed, sorry if I missed any cause these are like all I could even think of back in the day that I really loved back then, I stopped watching it really early, I think it was when The Last Air bender series ended I stopped watching completely. So I don't know any of the Nickelodeon shows now since everybody else loves talking about current Cartoon Network shows. Which is probably a good thing consider it might have gotten worse if nobody is talking about them now.
Back then I thought Nick was a weird wacky cartoons, like completely different than Cartoon Network, like Cartoon Network was like the more professional ones that know good kid jokes while Nick was like entertaining children with bathroom humor and disgusting stuff compared to Cartoon Network.
The first I watched back then was Rugrats and Doug on VHS. I enjoyed it so much back then and the music was really appealing to me when i was a kid. Then my mom started allowing me to watch their network show, these shows I listed were my all time favorites back then, Wild Thornberrys was really entertaining to know about the wild life, and soon after, they made a crossover with Rugrats. I watched the movie so many times I couldn't believe I was watching a crossover cartoon movie with Rugrats and the Wild Thornberrys. So many of these cartoons earned a spot in the big screen and my parents took me there so I could enjoy something kid friendly instead of....well back then they use to take me to violent movies because of my brother. Invader Zim caught my interest so much because of Zim's character design, the eyes were appealing, soon in highschool everybody went nuts over the show. I didn't know it left an impact to many high school er's childhoods. Spongebob was the most talked about cartoon back then because of how hilarious it was and with the talented voice actor Tom Kenny doing a fantastic roll as Spongebob, you can even see so many fan made ones on youtube having over millions and millions of views. But now with Spongebob being lame when the movie ended I couldn't imagine the voice actors would say "What am I doing? These aren't as funny as back in 2000's. Fairly Odd Parents & Danny Phantom was my best friend's favorite cartoons, he'd never stop watching them not even for a second. Like if its very cool here he would see someone's breath and go "A ghost? Here?"
I enjoyed them so much as a kid and looking back at them I still get a few laughs. hearing the Rugrats theme makes me cry because it makes me want to look back at my childhood on how amazing these cartoons were as a kid. Hopefully if I have kids one day I'll let them watch my cartoons that I watched as a kid. Sure would be a perfect experience.
. No but really I miss it too. 
