"99 Steps of Progress: Shoryuken" (t-shirt) by Maentis
"Tiger" (t-shirt) by Winter Artwork
"Sign Fighter" by Bao Nguyen
And as a bonus, here's Shael Riley and The Grammar Club's vocal mix of Zangief's stage music, Red Cyclone. I think I'm going to make an effort to post more geek rock and nerdcore songs here, now that I've discovered that Google has a secret, built-in music player.
The Grammar Club - Red Cyclone (Vocal Version)
(Shael Riley's gloriously awful website may be found here)