While doing some research to write this series of posts, I found this site: Scary Crayon. It has a great article on SFIBM, which turned out to be the version of Street Fighter I used to play on PC with my friends. This version features new moves like Chun-Li's shooting star and Blanka's electrifying bird. Check the link for more details.
What I find the most interesting about his version is that the hackers were able to predict some of the moves that were added to the game in later editions.