The margarita pie recipe reminded me of the time a few years back when my husband's brother and his wife were visiting from Florida and she wanted to make one for one of the family parties; she called her daughter (in California) to get the recipe they had used previously, and there was a bit of a breakdown in the communication somewhere, because she used regular evaporated milk instead of the sweetened condensed milk... epic fail!!
I'm pretty sure I have the same recipe from AllRecipes.com that Amanda posted, saved in my Mastercook program, but have never gotten around to trying it... maybe this will be the year!