Woo!

Persona 4 Golden is a must for any Vita owner, whether you have played the original or not.

I'm probably getting the Jack and Daxter Trilogy next week for the vita.
Other than that I'd recommend Wipeout 2048. But the game is really hard :o
PS allstars is also fun on the vita

Thanks everyone. I'll be sure to check them out. A bunch of them are completely free on Playstation Plus anyway. I had no idea about the mega pack either, i guess that got drowned out by the next gen hype at E3. It is an amazing deal but i just wish the memory cards weren't so small, i'm worried i might lose them if i ain't careful and they ain't cheap.

Also, is the portable charger worth buying?

Super Stardust Delta

Pure Chess

WipEout 2048

Ultimate Ghost N' Goblins (you will have to create a U.S. account)

Ninja Gaiden Sigma plus if you want a very challenging platinum. Took me about 2 months to achieve for only 20 dollars retail.

Wipeout 2048 had me hooked at the opening, now just if nintendo just made a f-zero, persona 4 pretty much the must have, Soul sacrifice decent combat with heaps of motivation to keep playing it, gravity rush simply to to it's uniqueness .

Get

Uncharted Golden Abyss
Gravity Rush
Persona 4 Golden
Little Big Planet
Sound Shapes
Dynasty Warriors Next
Unit 13
Sly Cooper: Thieves In Time

Soul Sacrifice

Persona 4 - no brainer

Gravity Rush -probably the best new ip on the vita you cant experience anything like it anywhere,

Soul Sacrifice -Dark&twisted fantasy setting with pretty good combat,

Virtue's Last Reward, Little Big Planet.- Haven't played them but they are probably the best games with sub-puzzle