Lasereth

Final Fantasy 1 (Released in US on NES as FF1, later released on PSX in FF Origins)
Final Fantasy 2 (Released in US on PSX in the FF Origins)
Final Fantasy 3
Final Fantasy 4 (Released as FF2 in US on SNES, also released with Chrono Trigger in FF Chronicles for PSX)
Final Fantasy 5 (Released in US as FF5 in the FF Anthology on PSX)
Final Fantasy 6 (Released in US as FF3 on SNES, later released with FF5 in the FF Anthology on PSX)
Final Fantasy 7 (US, PSX, same name)
Final Fantasy 8 (US, PSX, same name)
Final Fantasy 9 (US, PSX, same name)
Final Fantasy 10 (US, PS2, same name)
Final Fantasy 10-2 (US, PS2, same name)
Final Fantasy 11 (US, PC/PS2, same name)
Final Fantasy Tactics (US, PSX, same name)

That's a complete list right there with all of the PSX revisions. Hope this helps! As you can see, the only FF that US gamers have never seen (commercially) is FF3 Japanese.

-Lasereth

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"A Darwinian attacks his theory, seeking to find flaws. An ID believer defends his theory, seeking to conceal flaws." -Roger Ebert