If you get one of those PS2-GC cables, you could play your fighting games in style, if that's your thing...
Its a shame that Capcom won't put Street Fighter Anniversary collection on the 'Cube; If they made the controller as a bonus for pre-ordering or sell it seperatlely, I'm sure the 'Cube faithful would come out for it.
Though historically, Nintendo didn't always get the Street Fighter love. Yeah it was released first to the SNES, and then Turbo came out after, but Sega's special Champion Edition was the best home edition. If you wanted to play just Champion Edition with cheap-ass Bison, you could. You couldn't do that on Nintendo....