Patapon is a great game for a great price $20.
Then well, it can be a a variety of things you could get.
Ratchet and Clank : Size Matters
Jak (if you didn't buy the bundle)
If you like Baseball you have MLB 08 The Show. Let's you save in the middle of a game (yeah... it's about time they added that in my BB games) so it is perfect for on the go Sports gaming if your into that. It has infrastructure Online too which is quite busy I must admit. Supposedly it also has leader boards, chat rooms, etc... and you share the community with the PS2 gamers as well as the PSP gamers, not sure about when playing though. Still great portable Online Sports. :)
Good pickup on Crisis Core, I get my self lost in Missions though before advancing in the story, which is pretty good so far in my short 7 hours into it. I think I will have to go play this some more right now since you mentioned it.
Death Jr. isn't bad either. You could grab both for probably $18-20 total.
Portable Ops Plus is pretty much Portable Ops with more Maps, more Missions, etc...
iPhone = Great gaming device. Don't agree? Who cares, because you're wrong.
Currently playing:
Final Fantasy VI (iOS), Final Fantasy: Record Keeper (iOS) & Dragon Quest V (iOS)
