I think we have pretty similar tastes, so I'll just post the games that I'm interested in buying.
Persona 4: Golden (humourous and fun JRPG with great reviews)
Uncharted: Golden Abyss (UC on the go)
Jet Set Radio HD
Playstation All-Stars Battle Royale
Final Fantasy X HD (a huge FF on the go)
Little Big Planet Vita (touch screen adds so much over the PS3 version)
Rayman Origins (classic 2D platforming)
Gravity Rush
Assassin's Creed III: Liberation (AC on the go)
You might also be interested in:
MGS HD collection (I already have this on PS3)
Mortal Kombat (not a big fan, but it's highly rated)
Some of these are multiplatform or remasters, but I still think they're worth owning for (possibly) the extra content and the fact that they're on a portable for the very first time.
I don't have an iPhone or a tablet or any of that stuff, so the Vita will be even more useful to me for media playback, web browsing and apps.
