If you've wanted all the noisy action of Street Fighter 2 without actually playing the game, these funky little keychains might appeal to you. 

Bandai's Mousou Minicontrollers are more than the typical annoying noisemakers so frequently attached to keys and backpacks. Each one comes with a set of sounds straight from classic video games, including Xevious and a variety of Street Fighter characters [via Technabob]:

The controllers are only available in Japan at the moment, but Japan Trend Shop is currently taking preorders on a set of three for $44.