Art Clokey was an early pioneer of stop motion clay animation. His 1953 experimental student film, Gumbasia, gave birth to Gumby, which debuted on the Howdy Doody Show in 1956. Art was also the creator of Davey and Goliath.

Here's a clip from the 72 minute documentary, Gumby Dharma

Next we have Art's experimental animation, Gumbasia

Again, from the documentary, here is Art discussing Gumbasia

And for the die-hard who always wants more, here's a series of archived interviews with Art Clokey