| Made his film debut in 1967's The Tiger Makes Out; The Graduate was his second film. |
| Roomed with Gene Hackman and Robert Duvall before becoming a star. |
| Initially aspired to become a concert pianist and attended the Los Angeles Conservatory of Music. When he switched to acting, he studied under method acting guru Lee Strasberg. |
| Parents named him after silent star Dustin Farnum. |
| Separated from his first wife, dancer Anne Byrne, during the filming of 1979's Kramer vs. Kramer. |
| Won a 1966 Obie for The Journey of the Fifth Horse. |