There's a live stream of FFXIII gameplay right here on Justin, which is nice. That didn't take long, did it?
This is from the demo, obviously, which ships in Japan with FFVII Advent Children tomorrow.
You could wait for the direct-feed videos. Or you could import it. Or you could just wait until this winter and buy the Japanese version. Or you could wait until 2010 and buy the western version.
The choice is yours.