Feature film debut, "Dangerous Venture"

Played first leading role in features in one of his best-remembered films, the science-fiction classic, "The Thing/The Thing from Another World"

Played Jim Bowie in the five-part ABC adventure series, "Davy Crockett", starring Fess Parker in the title role

Starred as Chuck Martin in the syndicated TV adventure series, "The Whirlybirds"

Last feature film for several years, "Stark Fear"

Played Dick on the short-lived CBS serial drama, "Our Private World", a primetime version of the network's daytime drama, "As the World Turns"

Returned to features in the Westerns, "The Long Ride Home" and "Forty Guns to Apache Pass"

First TV-movie, "Breakout"