Harvey Birdman was great, but had a few too many running gags later on. It had a great final episode sendoff, and a lackluster revival episode that showcased how much Colbert has deteriorated as an actor.
Space Ghost Coast 2 Coast was extremely hit-or-miss, but when it hit, it hit hard.
Sealab 2021 was a fantastic show until Harry Goz died. Everything after just couldn't compare. There were a few decent episodes, though.