De Berry is best known for the score of a 1987 adaptation of Charles Dickens's A Christmas Carol, on which he collaborated with playwright Richard Hellesen[2] and director Dennis Bigelow.
Originally commissioned for the Sacramento Theatre Company, the work has been widely seen, with perennial productions in Rochester, New York, Denver, Colorado, Dallas, Texas, Baton Rouge, Louisiana, Phoenix, Arizona, among other communities.
He gave a memorable performance in the title role of a Sacramento Theatre Company production of The Imaginary Invalid.
De Berry put every ounce of himself into the role,[citation needed] possibly knowing that for him, too, it was almost certainly his last time on stage.
As an undergraduate at UC Davis, de Berry performed in several plays, including the role of Don Quixote in Man of La Mancha.