| Adopted stage name of Nicholas Pryor |
| Appeared on several daytime dramas, including "Search for Tomorrow" (CBS, 1963), the premiere of "Another World" (NBC, 1964) and "The Nurses" (ABC, 1965-1967) |
| Cast as Jeffrey Trout, the fiance of Joanie Bradford on the ABC series "Eight Is Enough" |
| Co-starred in the NBC sitcom "The Bronx Zoo"; played the straight-laced vice principal |
| Had recurring role of Chancellor Arnold on the Fox series "Beverly Hills, 90210" |
| Played Alan in the national tour of "The Boys in the Band" |
| Played Linc Tyler on the ABC soap "All My Children" |
1951 | Made stage acting debut with the Drummond Players in Baltimore, MD in "Light Up the Sky", billed as Nicholas Probst |
1953 | Received scholarship to study at the Oregon Shakespeare Festival |
1955 | TV debut in "Star for Tonight" (NBC) |
1957 | Broadway debut in "Small War on Murray Hill" |
1959 | Was a regular on the NBC daytime drama "Young Doctor Malone" |
1960 | Was regular on the CBS soap "A Brighter Day" |
1964 | Was understudy for the role of Nick in the Broadway production of "Who's Afraid of Virginia Woolf?" |
1970 | Film debut, "The Way We Live Now" |
1974 | Assumed the role of James Daley in the Broadway production of Jason Miller's "That Championship Season" |
1975 | Had featured role as Barbara Feldon's frustrated husband in "Smile" |
1977 | Appeared in the ABC miniseries "Washington: Behind Closed Doors" |
1983 | Played Tom Cruise's father in "Risky Business" |
1987 | Cast as the father of Robert Downey Jr in "Less Than Zero" |
1997 | Cast in the role of Victor Collins on both "General Hospital" and its spin-off "Port Charles" |