I have never done anime cosplay, or ever gone to a convention. What I have done is dressed up as video-game characters and go to the Mall or McDonalds. My latest was dressing up as a Task-Force 141 winter troop (based off Captain Soap from MW2 but not exactly)and going to Macy's. Many people where watching me closely.
I got into airsoft because of that same friend that got me into butterfly knives. We don't do the backyard wars with springer shotguns that suburbia's kids do, we dress up in military gear and use automatic rifles and all that good stuff.
My favorite games are:
Team Fortress 2
Counter Strike: Source
S.T.A.L.K.E.R: Shadow of Chernobly
S.T.A.L.K.E.R: Clear Sky
The Touhou Series
World of Warcraft
And it wont let me post more...