That was a brutally un-funny episode of SNL. The first three episodes this season were relatively good, too. Kate Winslett is decidedly unfunny, and she didn't really get all that much skit time, either.
Eminem's performance would have been greatly enhanced by a band. I'd love to hear those songs with a nice live kit. I caught the mic slip, but it seems as though he was actually singing live, it's just that he has like 7 tracks of background vocals to make his voice have more punch. He didn't look like he was having all that much fun. He needs to loosen up a bit, especially when he's performing a hilarious song like Just Lose It.
At the end of the show when they play the closing SNL tune, Em had his arm around Kate Winslet and she gave him this crazy look and brushed him off. It was a really weird thing to watch, as usually everyone's all affectionate at the end of the show.