Way back in 1979 - Jim Henson and his puppet master friends got together to make one of the most beloved, and unique movies of a generation - The Muppet Movie.
Since a movie of this type had never been attempted, there was quite a bit of prep work (including camera tests) that needed to be done.
Here is a sample of one of those camera tests. It's a little improvised banter between Fozzy Bear and Kermit the Frog, as they sit on a tree. Some with Kermit and Ms. Piggy, Kermit talks to some cows, and Fozzy gets a reluctant audience.