I like that part too. It's Moore poking right out at you. One of my other favorite things was the parody of kickstarter in the credits page, besides mirroring the decline of culture from the inside cover credits pages for the last two books, I thought it was clever and funny and showed Moore doesn't take himself half as seriously as the internet thinks he does.
Kevin O'Neill did such an especially brilliant job this time out hiding lots of cultural nods in the artwork and backgrounds. I hope we get lots more comics from both those two.
Oh yes, the Kickstarter parody was brilliant too. I had a good laugh reading that. Moore is very creative. I can't remember the last time I had so much fun looking at ... the credits page! And I agree with you, Moore is not the super-serious guy some people think he is.
Great references by O'Neil, I think there is one with Jack Bauer from 24 looking at his watch (it's like a lost detail in one of the panels).