As of the time of this post, Fusion is 100% playable in PCSX2. It's just a matter of whether your computer can handle it. I can get it to run at about half speed, or between 25 and 30 FPS, on my Mac Mini Intel Core 2 Duo 2.0 Ghz with 2 GB RAM in Vista.

Unfortunately I can't bring over my completed game save from my PS2 and for some reason I can't run the save game utilities that will let me import other game saves online. Has anyone been able to do this?

It looks pretty damned good in 720p.

http://www.youtube.com/watch?v=s6fhq2-6z-A

It'll be nice to have a computer someday that's powerful enough to run it at 60fps.