Last time I looked the Tina Fey/Amy Poehler Meet Your Second Wife sketch had had around 300,000 views. The five-minute Saturday Night Live clip has now topped a million. It seems to have struck various chords with viewers. To me it shows how at the top of their game Fey and Poehler are at the moment. And it shows how American comedy is not afraid to go to dark places in humour, making audiences laugh and making a point too.