Street Fighter Alpha - MAME (Ooh, naughty boy!)
Street Fighter Alpha 3 - PSX
Street Fighter Collection 2 - PSX
Street Fighter Alpha 3 - DC
Capcom Classics Collection - PS2
Street Fighter 2: Special Champion Edition TV Game
Street Fighter Zero 3 Double Upper - PSP
Are ya sensing a theme here? It's been a VERY Street Fighter-y weekend in the mossy household.
Incidentally, I've once again rekindled my love for the original Street Fighter Alpha. Oh the memories of the countless days spent playing it on my Saturn. Yeah, yeah, there aren't enough backgrounds, but damnit, the gameplay isn't all complex higgeldy piggeldy. (Not to say I'm so crazy that I can't admit that SFZ2 and 3 are vastly superior, since 2 was 10 kinds of cool and 3 added more charas and the guard crush)
And, I swear to God, the classic SF2's in the PSX Collection are better than the ones in the PS2 Capcom Classics. I know they used the same code, but on the PSX the graphics aren't filtered or in need of a manual re-size.