Fan Nickname: As might be expected, fans like to shorten the names of the world's legendary leaders when typing them out, so Alexander the Great becomes "Alex", Catherine the Great becomes "Cathy", Montezuma becomes "Monty", etc.
Promoted Fanboy: Jon Shafer became the lead designer of Civilization V at age 25, after growing up playing the first installments of the series.
Retroactive Recognition: Averted. Strange as it may seem to have actors in a Civilization game, there were some in Civilization II, playing the advisers who had their own screen, five across telling you how you were doing. A few of the actors had other minor roles here and there, but most didn't go on in an acting career. You can see them all on the IMDB here.
The adviser videos are on YouTube, too. They would sometimes argue with each other.
Firaxis was originally planning on including the Pueblo as a playable civilization in Brave New World, and had picked out a unique unit, a unique tile improvement, and a leader in the form of Popé. However, when it came time to find a Pueblo-speaking voice actor to portray Popé, they ran into stiff opposition from the Pueblo Council, who took offense at the idea of one of their cultural heroes being portrayed in the game. (Pueblo culture has strong taboos concerning photography and other visual representations of people, feeling that improper displays disturb the spirit world.)
The Spanish and Arab civilizations were originally planned to be included with the first game but ended up being cut for unknown reasons. Both were included in later games, however.