- Portrayed recurring character Carl 'Oldy' Olson on Late Night with Conan O'Brien (1993), NBC. He made his last national TV appearance as the character one week prior to his death. "Late Night" did a touching video eulogy shortly after his death.
- Upon his death the Late Night with Conan O'Brien (1993) aired a short tribute to him comprising comedy bits from the show.
- Held a masters degree in English Literature from Penn State University.
- He became a full-time actor at age 50.
- He has a twin brother, Robert J. Preston
- He appeared in more than sixty productions of Shakespeare plays and boasted that he had seen productions of Shakespeare's 37 plays, at least once.
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