George Carlin, for the first episode of “Saturday Night Live”

HOST

["Think of the role someone fills when they introduce the sketches and perform in the opening monologue on a late-night comedy show."]

George Carlin was the first person to host Saturday Night Live when it premiered in 1975, so the clue is hinting at his role that night. The word "host" here doesn’t mean a server at a restaurant—it refers to the comedian or celebrity who introduces sketches and guides the show. Since the clue names Carlin and mentions the first episode, the answer is simply the job he did: hosting.