There’s a Peanuts special for practically every holiday, but the perennial favorites seem to be the Christmas and Halloween shows. “It’s the Great Pumpkin, Charlie Brown” portrays Halloween through the kids’ eyes. But it was made in 1966, and we feel like we’ve seen it every autumn since. This year, it attracted renewed attention from some parents who disagreed with the show’s acceptance of bullying and mean-spiritedness. Conan watched closely this year, too, and found that it contained some language saltier than we might remember.