Not only do I eventually tell everyone I meet that I am specifically a console gamer, but I do make it pretty clear to people that I don't really play newer games and that I do not play FPS games. This way they know, I am not just some wackjob in a dorm room, I am a well refined retro eccentric. The reason I am soooo open about gaming is it is often the only way to find out from another female if she also games...well from the offset at least. Gaming does seem for many to be a guilty pleasure, not as guilty as their porn collection...but in some cases just as hidden from the public observer.
Sometimes I don't say I am a gamer, I broadcast it. Occasionally I go to the mall in one of my 90's shirts like my Dino Crisis one and I will hang out in the food court with my PSP playing Sewer Shark or some other blantantly retro game like maybe Star Control over DOS-Box.
In my personal opinion, and I am sure this is part of my bias, but the type of gamer which is sure repellent would be the type who hangs out on xbox live all day smacking strangers, who considers this behaviour to be a good use of their time. This stereotype of gamer just screams, "Don't date me in a million years!"...at least to me and a few people I have asked over time.