The one thing that makes me sad about Sarah Palin not running in 2012 is that Tina Fey will not be called upon to do her Palin impression. But you can catch her in this sketch from May, before the Republicans decided to hold 150 bazillion debates and make us all long for the days when they were all Fox News commentators instead of candidates for the GOP nomination.
Excellent impressions done by all, but it's Fey's Palin impression that grabs the 14th spot in the countdown.