Excellent!
Pretty funny.
What really matters is that they are now mocking him. Not very much, but a little. The premise of the whole first debate sketch was the Romney was lying and Zippy was worried about his anniversary. In the MSNBC sketch, they were mocking MSNBC much more than they were mocking Zippy. So in many ways they are still making excuses for him.
I think the bubble has finally burst. It must be painful for the lefties to see their candidate as he really is instead of how his puppetmasters have made him appear.