You have to watch all the way through to the end for the punchline. To understand just how brutal that punchline is, you need to visit Scientific American, to see their editorial response to ClimateGate. It's not the editorial which is brutal, but the comments - at least 50% of them are in the "Scientific American should be ashamed of itself" category.
Hat tip: Megan McArdle, where the comments are running ~90% in favor of "scientific fraud". The most interesting one deals with the MSM's reaction:
That's someone who knows how sausage is made.