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Star Trek fans have traditionally been called trekkies. For some reason the word trekker emerged somewhere between the original series and the last 2009 movie. But, there has been no real definition of the difference between a trekker and a trekkie. I have heard and read anywhere from "trekkers like facts and info, while trekkies like collecting memorabilia and going to conventions" to "trekkers are fans of the series when it first appeared on tv, and trekkies are those that became fans after the original series was off the air". Anyway, I go by the traditional trekkie. I think it's all in what word you like better personally. It could also be that, since star trek has so many devoted fans, some people decided they wanted to be the "best" fans, and came up with their own title or something dumb like that. You never know :P

Star Wars fan's really don't have a name...yet. Lol, i'm sure someone one day will find something good that will catch on :) I always like Wariens or S-dubs.

Star Wars fans do not have a common nickname, like Trekkies do. The 501st Legion (Vader's Fist) is, however the common legion of all Stormtrooper and Clonetrooper cosplayers.

Nerds.

haha