I no longer watch SNL regularly. It's always been liberal, and I think the show has reached it's trashiest level yet. There are still occasional glimmers of brilliance ever now and then, and this is one of them.
It gives a perfectly rational explanation for why Senator Joe Wilson was alone in his outburst during President Obama's address to congress.
I could not find that clip by itself, so beware of any content after that (although Bill Hader's impression of James Carville is dead on).
Enjoy.