So I'm not sure if this one has been brought up or not but...

Behold, Cartoon Network's longest running original series and my favorite CN original, Ed, Edd n Eddy created by Danny Antonucci. Yes, I liked this one even more than The Powerpuff Girls. Some people weren't able to get over the "squiggly" art style of EEnE and that's a shame because they were missing out on a really fantastic cartoon. What made the Eds so great was not only the writing, the animation, and the characters but, much like ponies does, it was a callback to many classic cartoons. Lots of slapstick silliness, wacky physics, and things not making sense. A cartoon that knew it was a cartoon and really ran with that.
It was also one of the last cartoons to feature entirely hand drawn animation--something that has sadly been lost in most animation today. And the animation was incredibly well done, with full fluid movements that really made the cartoon come alive. The cels were even all hand painted until the studio that did it was shut down, forcing them to go to digital painting (but the show remained hand drawn).
There were also the characters. The titular characters of Ed, Edd and Eddy were obviously the ones you connected to the most. Dimwitted Ed may be a complete moron but he has a big heart and an innocent nature that makes him almost like a big (smelly) teddy bear. Edd, or Double D as he's called by his friends, is to the Eds what Donatello was to the Ninja Turtles. He's the brains and the most rational of the group, though he somehow always finds himself getting pulled into his friend's nutty schemes. And then there's Eddy, the self-proclaimed leader, who is loud, whiny, and selfish. He's a jerk, but he's a likable jerk, and he does care about his friends more than he'd like to admit.
Then, of course, there's the long list of secondary characters like Ed's evil little sister Sarah (who is one of the few instances of the mean sister trope done well), her feminine best friend Jimmy, crazy foreigner Rolf, oddball Johnny who spends all his time with a plank of wood named Plank, the jerk jock Kevin, the girl all the guys want to be with Nazz, and plenty more. In the first few seasons these characters are kind of just there but as the show went on they really started to develop personalities and become as likable as the Eds themselves.
On top of that, several people working on FiM were also part of the Eds team back when it was running on Cartoon Network. James "Wootie" Wootton, "Big Jim" Miller, and Sibsy are just a few of the names you may recognize from FiM, all of which had a part in the production of Ed, Edd n Eddy. So if you used to dismiss the Eds for whatever reason, try watching it again. Season one is fairly forgettable so I would recommend trying anywhere from season two and beyond.
Though, I'm not sure HOW you will go about watching it seeing as it's never on Cartoon Network anymore, isn't on Boomerang, and has no good DVD release.
