Anime Expo 2009 was my first REAL cosplay experience. I haven't had a good outfit or good props until this show, and I have to say, I received an unexpected amount of fan reaction! Among the people I knew who were going, I expected an occasional PC gamer might recognize me and say: "Hey! It's Gordon Freeman" and they may or may not have taken my picture.
On average, I recieved about 1,500 pictures a DAY. Yeesh. I'm not complaining mind you, I just never expected it. I'll be at the San Diego ComicCon with the same outfit all four days, with a newly rebuilt Gravity Gun, one which lights up!
This picture was taken by Ace0fClub5 of japanator.com, and I am actually pending permission to post this. At request, this picture may be taken down, but is on Japanator's site here: [link]