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.