Joshua, I've got mixed feelings on this one.  Quite honestly, I lean more towards the thinking that creative people are attracted to gaming, not the other way around.  That is to say, I meet lots of creative folks while gaming, but I don't think it's because gamers are more creative, as creative people like to game.
I remember when I was working for...THEM...and one of the contractors was in talking to a colleague.  He mentioned, off-handedly, that he was a gamer and had his weekly D&D game scheduled that weekend.  The colleague expressed suprise, as he didn't 'seem like the kind of guy that would play D&D'.  Now, granted, this was when 3.0 was fresh and new...but I think it was a fairly telling statement.  So, too, was the reply...the contractor explained that we were stealthy...you never knew when one of use was around. 
 
Especially since I tend to make gamers as well as find them, I notice more diversity amongst my gamers.  I also tend to find that gamers are members of multiple communities, so it's hard to always claim some folks as gamers.  Are they anime fans?  Are the sci-fi fans?  Are they video/computer game players?  Writers?  Actors?  Welders?   It's really hard to pigeon-hole some folks...and I'm glad.  I would agree with PC though, that on the whole, I've found that people I like to game with are very creative people...but there are plenty of people I'm probably wouldn't play with, either.