Six new PlayStation One games are available for Japanese PS3 owners. They include:
A IV Evolution Global
Crash Bandicoot
Rally Cross
Souryu: Logical Mahjong
Spectral Force
Vampir: Kyuuketsuki Densetsu
As you can see, some of these games are already available for US PS3 owners. The other games, which include an RPG and strategy game offering, will most likely never make it to the States.