You can find some interesting stuff on YouTube.com if you type "banned cartoons" into the search field. One of my favorites is this commercial that the Flintstones did for Winston Cigarettes back in the 50's:
Most of the others involve really racist material, so I wont link them here. There are some great WW2 classics, like "Russian Rhapsody" and "Der Fuehrer's Face". Hey, Nazi's are always fair-game for satire in my opinion.