I think that they did a good job ending the series :D
Also, I loved Dexter's Lab and Courage the Cowardly Dog. c:
The last season(s) of Ed, Edd, and Eddy seemed weird. They weren't that bad, but they expanded the setting a bit much. School, stores, etc... I don't dislike it, but it felt weird when comparing it to the older ones in my head.
Also, Courage is still on Cartoon Network and I watched Dexter's Lab like last night or at least a few days ago on Boomerang.
Really, everyone here needs Boomerang. It'll make you all happier.