Earl Boen: Earl Boen. Actor: Terminator 2: Judgment Day. Veteran character actor Earl Boen is probably best known for his role as criminal psychologist Dr. Peter Silberman in the Terminator series. Other films which he appeared include Battle Beyond the Stars (1980), The Man with Two Brains (1983), Alien Nation (1988), Naked Gun 33 1/3: The Final Insult (1994) and Nutty Professor II: The Klumps (2000). Boen retired from screen acting in...