Moves.
Hundred Hand Slap- Any Punch Button pressed rapidly.
Sumo Headbutt- Hold Back, then press Forward+Any Punch Button.
Sumo Splash- Hold Down, then press Up+Any Kick Button.
Oicho Throw- Full Circle Turn+Any Punch Button.

Super Combos.
Oni Musou- Hold Back, then press Forward, Back, Forward+Any Punch Button.
Orochi Throw- Two Full Circle Turns+Any Punch Button (level 3 super move).
Fuji Oroshi- Hold Back, then press Forward, Back, Forward+Any Kick Button (in the Street Fighter Alpha series).