Guthrie had called the young Shatner the Stratford Festival's most promising actor, and he was seen as a peer to contemporaries like Steve McQueen, Paul Newman, and Robert Redford. Shatner was not as successful as the others, however, and during the 1960s he "became a working actor who showed up on time, knew his lines, worked cheap and always answered his phone. " His motto was "Work equals work", but Shatner's willingness to take any role, no matter how "forgettable", likely hurt his career. He took the lead role in Roger Corman's movie The Intruder (1962) and received very good reviews for his significant role in the Stanley Kramer film Judgment at Nuremberg (1961) and two episodes, "Nick of Time" and "Nightmare at 20,000 Feet," of the science fiction anthology series The Twilight Zone. In the 1963–64 season, he appeared in an episode of the ABC series Channing. In 1963, he starred in the Family Theater production called "The Soldier" and received credits in other programs of The Psalms series. That same year, he guest-starred in Route 66, in the episode "Build Your Houses with Their Backs to the Sea. "