From Sean Hannity's interview:
HANNITY: One last question that I didn't ask you: Did you watch Tina Fey on "Saturday Night Live"?
PALIN: I watched with the volume all the way down and I thought it was hilarious, she was spot on.
HANNITY: Do you think you could play her one day?
PALIN: Oh absolutely. It was hilarious. Again, I didn't hear a word she said, but the visual was spot on.
HANNITY: Has anyone ever said that before? There's a similarity...
PALIN: They've been saying that for years up in Alaska. In fact, I dressed up as Tina Fey once for Halloween. We've been doing that before Tina Fey's being doing that.