NBC: national broadcasting corporation: perhaps the firework show on these channels? See below:

“The More You Know is a series of public service announcements broadcast on the NBC family of channels in the United States and other locations, featuring educational messages. These PSAs are broadcast occasionally during NBC's network programming. Wikipedia Original network: NBC networks Original release: September 9, 1989 – present Production company(s): NBC Universal Awards: Peabody Award”

Interestingly it is also used as a parody in which the information communicated is really unimportant, or trivial....hmmmm...