You know something? I've seen a lot of cartoons attempt stylistic parodies of 1930's/early 40's cartoons, but I have never seen anyone completely nail the look until the dream episode of this series.
It managed to capture the elusive substantial essence of Windsor McCay, Fleischers, and Harmon and Ising right down to the artistic details. This series has a LOT of inspirations from here and there, but no more has the old school animation one shined through than that sequence. It had elements of Somewhere in Dreamland and BalloonLand...even that awful Jack Frost cartoon. if you took the right frames out of it and put a filter on those pictures, you could fool someone into thinking it was an authentic 30's short.
This cartoon is the most visually stunning 2-D tradigitally animated shows I've seen in years. Seriously, they could trim off the chapter titles and edit the entire thing together as a single movie and release it theatrically. I almost want them to.