
Pernell Elvin Roberts, Jr. (May 18, 1928 – January 24, 2010) was an American stage, movie and television actor as well as singer. In addition to guest starring in over 60 television series, he was widely known for his roles as Ben Cartwright's eldest son, Adam Cartwright, on the western series Bonanza, a role he played from 1959 to 1965 — and as chief surgeon Dr. John McIntyre, the title character on Trapper John, M.D. (1979–1986).
He was also widely known for his life-long activism, which included participation in the Selma to Montgomery marches in 1965 and pressuring NBC to refrain from hiring whites to portray minority characters.
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Ride Lonesome
1959 · as Sam Boone

Hot Rod
1979 · as Sheriff Marsden

Night of 100 Stars
1982 · as Self

The Sheepman
1958 · as Chocktaw Neal

Night of 100 Stars II
1985 · as Self

The Immigrants
1978 · as Anthony Cassala

The Silent Gun
1969 · as Sam Benner

The Deadly Tower
1975 · as Lt. Lee

Alien Lover
1975 · as Mike

Desire Under the Elms
1958 · as Pierre Cabot

The Bravos
1972 · as Jackson Buckley

Paco
1976 · as Pompiho

The Magic of Lassie
1978 · as Jamison

Checkered Flag
1990 · as Andrew Valiant

The Night Rider
1979 · as Alex Sheridan

Donor
1990 · as Dr. Simon Martingale

Four Rode Out
1969 · as Marshall Ross

Dead Man on the Run
1975 · as Brock Dillon