http://www.smashbros.com/en_us/characters/sonic.html
Sonic's special moves.
Nintendo speak translated into a hybrid of English/Internet:
Side+B=OMFG HE CAN CHARGE AND SPINZ
Down+B=OMFG, NO RLY, HE CAN CHARGE AND SPINZ AGAIN
Up+B is a spring that
others can also use... honestly, what's the normal B move? A spin, that you can charge? Please =.=