We're a multilingual household, so another that gets a lot of love is Sendung mit der Maus which was originally a TV series but now is on Youtube as well - including some very old episodes. My son's German is way better than mine though, and these days so is his Gaelic - mostly I deal with people in English and I've kind of started to lose that skill.

If you like big 4x4s (and who doesn't?) then Matt's Off Road Recovery is pretty good. Utah looks lovely, and of course they're culturally fairly free of rude words so that's pretty okay for children.

Quiet Nerd is another of my son's favourites, he builds little electric-powered campers and drives them out into the woods near where he lives.