Trivia: In the courtroom scene, all the people that have turned to color have to sit on the upper level. This is reminiscent of "To Kill a Mockingbird" (1963) where, in a similarly-built southern courthouse in the 1930's, all the "colored people" (African Americans) were relegated to the upper level.
Trivia: When the TV technician is talking to the children through the TV, he is sitting in front of a test card with a picture of an Indian. The Indian's expression changes each time we see it (mentioned on the DVD director's commentary).
Trivia: When the mayor is talking in the bowling alley, you can see the projection of the score sheet. There is not a single open frame; everyone bowled a strike or spare every time.
Answer: To me it never looked like a montage. It was just someone flipping through the channels (channel surfing) until they got to "TV Time" where they stayed to watch the commercial for the PleasanTVille marathon. People (especially before DVRs) sometimes just flip through the channels looking for something to watch, especially if you don't know what's playing on each channel.
Bishop73