John Meroney features footage that hasn't been seen in nearly six decades:

Today, it's an astonishing, even eerie, scene: the icon of modern American conservatism, whose rise to political prominence was galvanized by the cultural rebellion of the 1960s, fighting off an attack-at-gunpoint by the quintessential modern American rebel. But when "The Dark, Dark Hours" episode of General Electric Theater aired live from Hollywood on December 12, 1954, Ronald Reagan and James Dean were just two actors yet to find the roles that would define them.

And yet in this clip, they do seem to have stumbled across the roles that would define them.