For those of you that can't find a Madcatz SF4 SE joystick, the PS3 Hori Fighting Stick 3 is a great buy at $49. (Get em while they last.)
http://www.amazon.com/PS3-Fighting-Stick-3-Playstation/dp/B000MWE3BI/ref=sr_1_1?ie=UTF8&s=videogames&qid=1236528459&sr=1-1
Those looking to mod it with...