For one week only, purchase PAIN, PixelJunk Monsters, High Velocity Bowling, High Stakes on the Vegas Strip: Poker Edition, or Rocketmen: Axis of Evil for only $4.99 on the PSN.
While I don't have any kind words for Rocketmen ...
Pixeljunk Monsters, PAIN, High Velocity Bowling and High Stakes Poker are all WELL worth $5 each, with my highest marks going to High Velocity Bowling and Pixeljunk Monsters.
Additionally, both High Stakes Poker and Pixeljunk Monsters can be played on a PSP that you have connected to your high-speed internet connected PS3 in remote-play mode from any wi-fi access point in the world.