[PSP] What games should I get?

Getting a PSP 3000 for $100 soon, wondering what games I should get. I'm looking more for the good JRPG's I've missed out on (I hear Persona 2 has been re-assembled and released on PSP) and figured you guys would have some good suggestions.

Also, give me some non-JRPG suggestions, too. Best of the best and all that.

Also, any Castlevania style games. Love those.

The Patapon series is a great, there is also the Monster Hunter series. If you like tactical RPG's then Tactics Ogre would be a good choice.

Cladun and Half minute hero are pretty good too.

EDIT:

Forgot that Star Ocean series on the PSP.

Half Minute Hero was probably my favourite game for PSP. Prinny is good if you like platformers.

Not really many other standouts; GTA and the other standard stuff are nice.

non-JRPG suggestions, too. Best of the best and all that.

Eh, not a whole lot.

Monster Hunter Portable 3rd
Dissidia 012: Duodecim
Half Minute Hero
Peace Walker
Valkyria Chronicles 2
Castlevania: The Dracula X Chronicles if you want a Castlevania game. Includes an unlockable SOTN.

I don't play many JRPGs on my PSP, so I don't know about that.

Patapon (1, 2, and/or 3)
Cladun (1 and/or 2)
Disgaea, if you haven't played any of them on another console before
Dissidia 012
Jeanne D'Arc I hear is good
Kingdom Hearts: BBS if you're into the series
What Did I Do to Deserve This My Lord? worth playing
ZHP - Unlosing Ranger v Darkdeath Evilman
Valkyrie Profile is one of the rare PSX games that can be played on PSP!
Fate/Extra is a pretty interesting twist on Rock-Paper-Scissors; maybe look into it. I thought it was pretty okay for the short time I played it (and then I got sidetracked)

Now that I remember it, I'd like to recommend Holk's lists, the ones I personally recommend from each list in a spoiler beneath:
http://rmrk.net/index.php/topic,35717.msg429186.html#msg429186

Spoiler for:

Riviera: The Promised Land - if not played before on GBA or whatnot
Crimsongem Saga
FF7 Crisis Core

http://rmrk.net/index.php/topic,35719.msg429191.html#msg429191

Spoiler for:

FFT - if not already played etc
Yggdra Union - INAP (if not already played)

http://rmrk.net/index.php/topic,35721.msg429196.html#msg429196

Spoiler for:

MHFU
Recent Phantasy Star Portable can be played Infrastructure mode, even if you hack your PSP IIRC

http://rmrk.net/index.php/topic,35722.msg429197.html#msg429197

Spoiler for:

Katamari (INAP)
Half-Minute Hero

http://rmrk.net/index.php/topic,35770.msg429558.html#msg429558

Spoiler for:

Gitaroo Man

There were some others I played, but I don't remember...