Street Fighter II for Sega Genesis was probably my earliest fighter, but I wasn't too big on SF then as I am now.
I also have fond memories of Mortal Kombat as a kid as well, since me and my cousins would play it all the time and have a good laugh.
I had friends who owned Tekken Tag Tournament growing up too, so there was that.
In middle school I was heavily into Soul Calibur 2 and 3, Super Smash Bros. Melee and Tekken 5 and played almost religiously.
It was a party when my cousin would visit from Oregon and bring MvC2 though.
But now I'm just primarily into Street Fighter these days, dabbling in SSF4:AE since I have the means.
Cody is my baby but Yun is more fun than a barrel monkeys goddamn. I feel so mighty and ~*unstoppable*~