I just got back from work so I don't know if this has been posted or not but PS3 owners can now buy PS2 games on the PSN. It's under the banner 'Playstation 2 Classics'. The games are being sold for $10 each (so far anyway). They can be upscaled to 720p but they aren't HD remakes (like the God of War Collection). They are no trophies either.
The games released so far are...
Harvest Mood: Save the Homeland
Maximo: Ghosts to Glory
Ring of Red
I'm downloading Odin Sphere right now. One day, whenever the download is finally done, I'll come back here and talk about how the game runs and looks.