At one point Dunn was considered by Gene Roddenberry for the part of Spock in The Cage. He was also originally considered for the role of Balok in The Corbomite Maneuver, but that part eventually went to Clint Howard. (source: These Are the Voyages)...
At turns fascinating, insightful, heartbreaking, heartwarming, infuriating and even savage, it’s certainly the most interesting ST-themed interview I’ve ever watched / listened to....
His birth father died when Brent was less than a year old, so he took his adopted father’s name “Mintz” from 1955-1975 before finally reverting back to “Spiner.”...