Since nobody's mentioned Ian Hubert yet, his Dynamo Dream series is made in Blender:

Episode 1: https://www.youtube.com/watch?v=LsGZ_2RuJ2A

Episode 2: https://www.youtube.com/watch?v=xlqhdaLhRVY

Episode 3: https://www.youtube.com/watch?v=JM_WPiT6NRQ