About 10 years ago there was a widely publicized case of a small town policitician in the US, who had posted a nutty campaign video to his own website, and which later got picked up by a TV program (like AFV or somesuch). He thought it was great that his video was on TV, so he posted a video of it being shown on the program, something like 5 seconds of their introduction followed by 60 seconds of his own material.

The TV network promptly sued him for infringing their copyright, and (I believe) lost. There would have been a fair amount of backlash as well.

Unfortunately I cannot remember the names or places involved, so I'm getting nowhere with Google. Perhaps someone else will recognize this description and chime in.