I started laughing out loud! The only time I did that during the debates.
There was one time when I laughed out loud, but it's really sorta obscure.
Palin made referrence to Ronald Reagan's remark about America being like "a city set upon a hill." Ultimately that referrence is Biblical, but in the meantime Reagan's speecwriters stole it from John Winthrop, who used the phrase in the same context in a lay sermon he preached on board ship bound for New England in 1630.
Like I said, obscure. Sort of a history joke.