Arthur "Eustace II" Anderson "Dark Shadows" walk-on
Just some trivia: the late Arthur Anderson, who was the second actor to voice Eustace, has a walk-on bit as a cabbie in Ep. 116 of the 60's supernatural soap opera, "Dark Shadows". It's an early B&W episode, on old low-res videotape, but you can still pick out Eustace -- @4:10:
https://www.youtube.com/watch?v=5pOn2arXOr4