The Joy of the Blank on Blank Series
Quoted Studio has been creating animations for old interviews with various writers, directors, actors, musicians and other artists. It's one of my favorite video series to get lost in. They're really fantastically made, with pleasant animations and great sound design.
They typically clock in at just under 6 minutes long, which is the perfect length. It's long enough to set up the idea and drive it home without it becoming stale or boring.
Here are a few of my favorites:
And some more: