The good news is that it's Super Street Fighter II: The New Challengers! The SNES game, which costs 800 Wii Points (GBP 5.60 / EUR 7.00), lets you play as the original SF2 cast (let's see if I can do it off the top of my head - Ryu, Ken, Guile, Blanka, Zangief, Chun-Li, E. Honda and Dhalsim - woo!) as well as the four bosses (Balrog, Vega, Sagat and M. Bison) and the four "new challengers".
They were and are British military woman Cammy (long hair, camouflaged legs despite lack of trousers), Fei Long (Bruce Lee without the lawsuit), T Hawk (a big Native American man who likes denim) and Dee Jay (a kick-boxer who has an excellent laugh in the often under-appreciated Street Fighter II: The Animated Movie.
The game itself isn't as fast as Street Fighter II Turbo, from memory, so you might want to opt for that instead, unless you're slow like me and the only combo you ever mastered was flying hard kick-hard punch-fireball. Find out for certain next time Nintendo release enough Virtual Console games that it's worth our while to commission Dan to do his roundup column.