Discovered at age ten by Lloyd Bridges
Landed stage debut at age ten in "Stone Jungle"
Made film debut in Joseph Losey's "The Boy With Green Hair," his first appearance with fellow child actor Dean Stockwell
Made first TV appearance on "The Ed Sullivan Show" as a child
Demonstrated acrobatic dancing skills in his first musical Stanley Donen's "Seven Brides For Seven Brothers"
Cast in first film-starring role in "The Young Guns"
Nominated for a Best Supporting Actor Oscar for his performance in the popular melodrama "Peyton Place"
Co-starred as Riff in Robert Wise's hit musical "West Side Story"
Made last significant appearance in a major Hollywood release for three decades in Wise's "The Haunting"
Cast in last significant appearance in a big-budget release, the international co-production "The Long Ships" starring Richard Widmark and Sidney Poitier
Starred in his first feature for exploitation producer-director Al Adamson, "Satan's Sadists"
Appeared briefly in Dennis Hopper's disastrous "The Last Movie"
Made feature screenwriting debut, co-writing with Neil Young, Dean Stockwell, Jeanne Fields and James Beshears in) "Human Highway"; directed by Young under a pseudonym (also acted)
Portrayed Dr. Lawrence Jacoby, a recurring character on the cult TV series "Twin Peaks"
Guest-starred on the sci-fi drama "Quantum Leap," co-starring Stockwell
Appeared as an interview subject on the Cinemax documentary "Dennis Hopper: Crazy About the Movies"
Made TV-movie debut on HBO romantic comedy "Running Mates"
Guest-starred on daytime series "General Hospital"
Landed a three-episode arc on CBS drama "Joan of Arcadia"
Appeared on the British series "The Increasingly Poor Decisions of Todd Margaret"
Acted opposite Ryan Gosling in the action film "Drive"