SF2-SSF2:T back in the day. During the Champion Ed.--Turbo days, I was a demon, and would regularly travel to other states and dominate all comers. I devastated NYC's Chinatown, which was, back then, where all the premier SF2 players congregated. There and Broadway Arcade. My Ryu and Guile were unstoppable. I'd stay on the machine all day wherever I was.
I was so good that I used to be able to do a shoryuken (only in SF2 and CE) with Ryu just as a double-jointed character (i.e., Guile, Blanka, Dhalsim etc.) was descending from their jumping attack on me, using the first invincible frame of the dragon punch (which doesn't do damage, but is still invulnerable) to allow their attack to pass through me, and the two hits from the shoryuken would then connect before they were able to defend once they got on the ground (this window of opportunity is around 1/10 of a second, I'd wager). I was
that good.
I was also the first player around that I knew of to "discover" the triple fierce (Ken) in CE, and Guile's standing-fierce-into-shield kick combo. The triple fierce I discovered easily, because I had been doing cross-up neck kicks with Ryu/Ken into fierce punch and then the shoryuken (which usually stunned/killed them-- SF2 damage was
way unbalanced) in regular SF2 already. But anyway, I sound like a geek now.
Strider for Genesis: beat the game on normal difficulty in literally 5 1/2 minutes (timed) without getting hit.
Sonic 1: I was a god at this, but particularly the first stage: I could get 225 rings in 1:23, which is, I believe, the fastest
possible time in which one can get all the rings in the stage. I had this down to a science, and would make the same exact jumps and movements every time through.
Thunderforce 3: beaten without dying
Gaiares: beaten without dying (no F-force weapon, either- I think that was the name)
Sadly, my days as a semi-ninja gamer have long since faded. Now I'm just terrible at games, for lack of practice.