Sonic 1: You like simple elegant things.
Sonic 2: You like attitude and believe bigger is better.
Sonic 3: You love anime.
Sonic & Knuckles: You enjoy action movies.
Sonic Adventure: Your dream game is a Sonic RPG.
Sonic Adventure 2: You again like attitude but this time some edge to it (soap shoes and Shadow).
Sonic Heroes: You fall for gimmicky things.
Shadow The Hedgehog: You have a great sense of humor.
I'm gonna go out on a limb and say Sonic Triple Trouble (which introduced Nack the Weasel, who I believe got renamed to Fang the Sniper because SEGA isn't sure who owns the original name anymore)