Doug was originally licensed and produced by Nick, but the second season/series was made by Disney. There are all kinds of differences bewteen the two versions, but the continuity was terrific. And along that line, Doug wasterrific, too. So was Pepper Ann. But Chip n' Dale Rescue Rangers remains one of my all time favorite shows EVER to this day, and I had a huge obsession with it for quite some time.
Duck Tales was great, Tale Spin was great, I LOVED Darkwing Duck, and if newer shows count, Buzz Lightyear of Star Command is another personal favorite. <3
Also, for about two years or so, Toon Disney aired a show called 'Toad Patrol' that I thought was just the neatest thing. It was cancelled a while ago, and you never hear any mention of it anywhere... and I never got to see the last episode. ;-; Now I'll never know what happened to all the toadlings-turned-toadstools...