Saturday Night Live, not its original name, launched like a thunderbolt in 1975, at least to the younger generation. Attending Hampshire College in western Massachusetts, I would stay up to watch Carson on an old black-and-white TV with a huge “Frankenstein (on) switch” that connected to the box by a tangle of wires, and sometimes “5 All Night.” The cheapest show you could imagine, 5 All Night ran from 1:00 to 5:00 a.m., featuring a library of older black-and-white movies and announcer George Fennel (“who never made an on-camera appearance”). There are only so many Charlie Chan movies you want to see in a week. Back in the day, 5 All Night may have contributed to a rise in marijuana sales in southern New England. Then came Saturday Night Live on NBC. It wasn’t standard network fare, almost the opposite. An inside joke for young people, it was too hip