Along with Dexter's Laboratory, this is the show that has kept me watching Cartoon Network, even when they put dribble like "Totally Spies" on.
This series, although having a few 'flat' episodes, is a great example of a well made cartoon. Rarely do you hear the same music twice (which has, on numerous occasions destroyed other series where you hear the same stuff over again over numerous seasons), the voice acting is always great (from the main characters to Mr. Katz and the Goose God), the animation is great (the varied reactions they give Courage is worth watching for alone) and the stories are always unique, even when they're not up to the series standard bar (which is pretty darn high, IMO).
Ultimately, the series is a culmination of so many excellent factors, with the most important being the way that it can be scary but not so much that you can't let kids watch it. It's the perfect black humor cartoon for kids and adults that I wish was out on DVD, as I'd buy it in an instant.
My personal favorite episodes are "The Chicken From Outer Space", "Revenge of the Chicken From Outer Space", "King Ramses' Curse" and "The Gods Must Be Goosey". I am very glad that they're currently re-showing this on Cartoon Network, because if you haven't seen it, you deserve to.
