[1] https://www.youtube.com/watch?v=YOEM6_JB5CI
The Xerox Star introduction in 1981 featured an appearance by the comedian who played Brother Dominic.
[1] https://www.youtube.com/watch?v=5L0Zdu91mWo
[1] https://www.youtube.com/watch?v=YOEM6_JB5CI