...Tekken 5: Dark Ressurection? >.>
I dunno, I've been on a DS/PS3 binge lately, I forget what all's on the PSP.
...There's also SNK Arcade Classics, Which has Fatal Fury, King of Fighters 94, Art of Fighting, World Heroes, & Samurai Shodown.
It also has Metal Slug, Burning Fight, & Shock Trooper.
Aside from that and Tekken, I don't really have any GOOD fighting games. >.> EA Replay has one, But it sucks balls.