Good PSN Games?

[micrometers]

I can think of:

Pixeljunk games

Flow

Flower

Any other hidden gems?

 

[zerocool84]

Dead Nation is fun but only with other people.

Fat Princess is pretty good also.

If you haven't played Plants vs Zombies on any platform, it's addicting as hell.

 

[Todd33]

http://www.gamepro.com/article/features/215171/the-15-best-psn-games/

 

[Baked]

Super Stardust HD and Pac-Man Championship Edition DX are great pick-up games if you don't want to invest too much time.