The excellent PS3 RPG Demon's Souls has attained Greatest Hits status and is now available for $29.99 in the United States. It should also be much easier to find as new copies with the Greatest Hits branding are currently shipping out to stores across the country.
The game, developed by From Software and published by Sony in Japan, was brought to the US by Atlus and to Europe by Namco Bandai.
The RPG gained notoriety by being extremely difficult and rewarding player experimentation along with an innovative multiplayer scheme. If you've got a PS3 and haven't played Demon's Souls, go ahead and give it a shot*.
*Atlus not responsible for controllers broken in frustration.