Aaahh!!! Real Monsters 6
Aaahh!! Real Monsters is a 1994 series about a group of three monsters named Ickis, Oblina, and Krumm. They are students of monster school where they learn how to scare humans. The series is made by Klasky Csupo, one of the more wacky animation studios, you know them from Rugrats and Rocket power.
Adventure Time 10
Adventure Time was a pilot pitched for Nick which they foolishly turned down. Cartoon Network picked it up and proceeded to make it one of the best animated series ever made.
It's got Finn the human, a likable silly boy protagonist, Jake the dog, his brother who is a dog so he's also a middle aged man. There's also Princess Bubblegum, ruler of the Candy Kingdom and Marceline the vampire queen, queen of... being a vampire?
Aggretsuko 7
Aggretsuko is a Japanese animated series based off a Sanrio character, Aggresive Retsuko. She is an office worker who has to deal with the reality of being a low level employee and also a woman. This silly animal show is actually more true to life of the average Japanese worker than any anime I've seen. Retsuko is shy and doesn't want to bother her coworkers, but she has a rage deep inside her, she hates her boss, she hates living under the heel of the corperated industrial complex. Often she goes out to karaoke and screams her lungs out after work.
Animaniacs 7
Animaniacs is about a trio of toon children running around a production studio causing mayhem and madness.
The series has a bunch of 90's pop culture references that alot of people won't gel with. I remember watching as a kid and just being so confused for most of the episodes.
American Dragon Jake Long 7
Amphibia 8
As Told by Ginger 6
As Told by Ginger is something. It's really... something. Every few years I just get this need to watch all of it. Like I just forget everything that happens and like, I need to know. It's about Ginger, a young girl going through the shit you have to go through in middle school.
Avatar The Last Airbender 10
Batman Beyond 8
Batman the Animated Series 9
Bee and Puppycat 7
Beetlejuice 6
Bob's Burgers 7
Carmen Sandiego 7
Castlevania 8
Catdog 6
Chalk Zone 6
Chowder 7
Clarence 7
Courage the Cowardly Dog 8
Craig of the Creek 7
Craig of the Creek is a recent show about kids who go to a creek. The creek is sort of their own little universe where they all form their own clubs, and cultures.
Cybersix 7
Dan vs 8
Dan vs is one of my favorite cartoons ever made. Dan is like, like I get him on a quantum physics level. He's an angry, vindictive, little man.
Danny Phantom 7
Darkwing Duck 7
Dave the Barbarian 6
Dexter's Lab 8
Dexter's Lab is interesting in that it's humor holds up to this day. The timing of the jokes just works so well.
Disenchantment 7
Doug 6
Duck Dodgers 7
Ducktales 8
Ed, Edd n Eddy 8
Epithet Erased 7
Ever After High 6