Of course, Ed, Edd n Eddy is the most popular Cartoon Network cartoon to date. It's OK to watch with the family but there will be things that adults will find innapropriate. I don't find it to disturbing, but parents might like to know this:
Violence: the violence in this cartoon never ends. Of course, it's a bit like Tom & Jerry but a different tone. Of course, it's just flat out wacky but sometimes it can be a bit more graphic (for example: Ed has a cleat stuck in his face, and Edd tries to pull it off, but accidently rips off his entire face!).
Sexual stuff: Of course, you won't find any characters having sex or anything, but a little dose of sexual humor can be found. For example, the show features pornographic magazines often, and the characters Eddy and Kevin read them. In fact, one episode revolves around Eddy losing them and trying to find them. However, the show doesn't directly tell you that they are porn magazines, but the titles and silhouettes of women on them will give it away. Again, this most likely won't offend anybody, kids wouldn't understand, and parents probably wouldn't notice.
Language: no cursing, but name calling is common, and some insults are just mean. This most likely won't affect kids.
Is this show good? It's excellent! The witty humor, excellent animation, and funny characters will win the hearts of viewers. This show remains a classic.