Street Fighter: Assassin's Fist recently launched a Kickstarter campaign with the goal of crowd-funding what aims to be the definitive live-action Street Fighter. Joey Ansah (The Bourne Ultimatum's Desh Bouksani) helms what would be a TV/web series set in Japan, exploring the story of Ken and Ryu. The project has now cast those leads, as well as Gotetsu and Gouken.
Kyle Pryor plays Ken Masters
Mike Moh (Kamen Rider: Dragon Knight's Kamen Rider Axe) is Ryu
Akira Koieyama is Gouken
Shogen will be the young Goken
Gotetsu is Togo Igawa
UPDATE - Kyle Pryor plays Ken Masters' father, while Christian Howard is Ken himself.