Longtime character actor Ed Begley's son, Ed Begley Jr. made his acting debut on My Three Son in 1967 in the episode, "The Computer Picnic".
Ed Begley had previously appeared in a season 2 episode, "Romance Of Silver Pines", playing a much friendlier character.
In the scene where Uncle Charley and Mr. Storffmann are arguing over the saw, Ed Begley (Mr. Storffmann) turns his back to the cameraman - and the shadow of the cameraman's head, moving around, is visible on his back.