Best PSP games?

I remember playing with Tekken 6, SpiderMan 2 (2004), Need for Speed Most Wanted (2005). I love the adventure and twist on each game. I have lots of happy moments taking control on those games.
 
I also remember playing lots of Burnout Paradise! Burnout Legends and Burnout Dominator! The nostalgia is flooding in. You bump into cars and wreck them while racing to be 1st! All while listening to Goldfinger. You can release your pent up rage with this game.
 
I have a PSP collecting dust and I thought maybe I could get some games to play on it whenever. What are the best games in your opinion?
1. Gran Turismo PSP
2. Dissidia 012 Final Fantasy
3. LocoRoco 2
4. Valkyria Chronicles 2
5. Final Fantasy 7: Crisis Core

All those are my favorite PSP that I enjoy playing so much.