Kristen Wiig joined Jimmy Fallon on "The Tonight Show" Wednesday night. If you've ever seen a Wiig appearance on "The Tonight Show" which, of course you have, you shouldn't need any more information to deduce that something truly magical must have happened on that stage. And you wouldn't be wrong. Adding to her list of glorious impressions, Wiig arrived at the show as the Mother of Dragons, "Game of Thrones'" Daenerys Targaryen. But you can call her Karen for short.