What's Mallard raving about today?
Pro wrestling, The Media.
I'm confused does today's panel even have a punchline?
The only way it you could even possibly argue that it has a punchline is if you thought Mallard was assuming everyone felt pro wrestling already has a bad reputation. But that would make Mallard an elitist bastard, when we know he represents the viewpoint of Joe Everyman, because he said so.
Note: For what it is worth, I like House. That said, I doubt I would like it if it didn't include Hugh Laurie. Conversely, I would probably watch a televised reading of the phone book if it did involve Hugh Laurie. And yet, I also like the Sopranos, even though it does not involve Hugh Laurie.