There is a PS1 emulator for the PS3 that will play any region games.
However, I don't believe it's signed, so you'd need a JB'ed console to run it.
If you have a B/C PS3 (which I assume is the case), then you can use the SwapMagic and OPL trick to get other region PS2 games running on your PS3.
60GB (120GB WD Scorpio Drive) PS3 (CECHA01, NTSC), 3.7OFW
60GB (640GB Samsung Drive) PS3 (CECHC04, PAL), Kmeaw 3.55, Repaired (Dead Laser)
PSP-1003 FAT, CFW5.00 M33-6 & Prometheus v2
X-Box 360 Xenon (JTAG'ed, 500GB HDD)