Now time to answer my own question...
Ryu vs. Kyo (the main characters)
Dan vs. Shingo (the goofy guys)
Sagat vs. Iori (the rivals)
Guile vs. Heidern (the defenders of justice)
Charlie vs. Kim (the somewhat obsessed defenders of justice)
Belger vs. Geese (big name criminals with big name gangs)
Strider Hiryu vs. Eiji (battle of the masked ninjas)
Guy vs. Mai (both ninjas)
E. Honda vs. Hinako (both sumoes)
Roll vs. Bao (both little kids with fighting ability)
Adon vs. Joe (battle of Muay Thai champions)
Gen vs. Chin (the old fogeys)
Akuma vs. Takuma (the masters of style)
Special consolation matchups:
Dramatic Battles
Bison vs. Athena and Kensou (battle of psycho power)
Cody vs. Chang and Choi (prison battle)
Haggar and Zangief vs. Tizoc (interpromotional wrestling)
3-on-3 Tag Battles
Jedah, Pyron, and Bishamon(the cursed armor) vs. O. Chris, O. Shermie, and O. Yashiro (wow, the Orochi team in tag...? I hope the Darkstalkers have some form of healing ready...)
8 vs 8 Ratio Battle
Cammy, Juli, Juni, Birdie, Balrog, Vega, Sagat, and Bison vs. Yamazaki, Billy, Axel, Laurence, Duck, Geese, and Krauser (the villain match)
Ryu, Ken, Chun-Li, Sakura, Guy, Felicia, Morrigan, and Sagat vs. Kyo, Iori, Terry, Ryo, Ralf, Clark, Andy, and Robert (the clash of warriors)