>>12522486look up like, brawlbox or brawlhack forums. It's a fun thing using a "hacked" wii by downloading a homebrew channel on to your wii with instructions from say,
wiibrew.org. You can then put emulators and applications such as music players and dvd players and other such things as multi-region game loaders allowing you to load japanese games on an american system and vice versa. Also has cheat code support as well which is how these are used. Through an app called gecko OS you can get a cheat code from just about any brawlhack forum and put it in gecko OS and you can swap models, stages, music, whole movesets and animations. It gets EPIC sometimes.
Video related: It's Cloud over Ike, and Sephiroth over Marth both with custom movesets. This is a shitty video though sadly.
http://www.youtube.com/watch?v=HZJdj27eUmo 
