Posting this as a general response everywhere this comes up:

Here's the deal: "this show" is used because vagueness is the whole point. More specific references could lead to problems due to the Take That nature of these jokes, and these stingers have already stirred up enough controversy as is.

If you don't think the joke is funny because it's unspecific, that's fine. But the joke being unfunny to one person is not grounds for removal. If you have a better idea (and hopefully far better than "this meme" or "The Muppet Show", because that makes the stingers even more pointless), suggest it.