Wow, how could they miss James Arness? Gunsmoke was, if I'm not mistaken, the longest running tv show ever. The ones they showed were many people behind the scenes that we didn't know. You'd think they'd do a bit more research.
TIS, the Oscars honor those in the movies, not television. Arness was a minor movie actor.
so, arness was a minor movie actor...then jackie cooper must have been the opposite.