For kids getting ready for their first day of school...
If you've got a kid on your hands who somehow already hates school (shame!), try this. (The "Teeny Little Super Guy" animator, Paul Fierlinger, animated this as well.)
And for those of you looking for a full-on nostalgia experience, this. I don't recognize most of the stuff after 1987 or so, which is understandable. I was surprised by how much of the old stuff I recognized, until I remembered that Sesame Street reuses old clips all the time. I wonder if they still throw stuff from the 1970s in just to shake things up a little?