According to dbtechno.com:
On the Friday addition of The Tonight Show with Conan O’Brien, Sarah Palin made a guest appearance out of the blue. She was on the show to defend herself against the forever aging William Shatner who has made numerous appearances on the show, mocking the former Alaskan Governor. It is not hard to make fun of Palin ... She read specific parts of Shatner’s autobiography, including a part where he talks about visiting with an elephant while in his underwear.
William Shatner on a specially selected part of Palin’s “Going Rogue:" “I looked down to see the moose’s eyeballs lying in his palm, still warm from the critter’s head.”Palin tried but failed to shed humor on a humorous part of Shatner's book. Not an easy thing to do.
Both left the stage after the show on good terms according to sources, as they left arm in arm. After the show, Conan stated: “It’s good to finally see those two together,