Here is Tina Fey being interviewed by David Letterman in the fall of 2008. Fey, you may remember, nailed Sarah Palin in a telling impression made up mostly of actual Palin quotes.
Unusual for topical humor, both the original impression and this interview hold up very well after eight years. Fey is nothing but wonderful in this interview: funny, warm, even humble. And this is Letterman at his best, as well: intelligent with apt questions, willingly sharing in the humor.
Watch and enjoy: