I saw the big spot for MFGG, Mario Fan Game Galaxy, on AOTS, Attack of the Show!, this week and I thought about the awesome fan driven stuff at pscave.com. It seems that someone has taken on a new fan made game of PS and a demo is coming soon. Here's the link to PSCave.
Check out their emulated PS games. The Master System PS conversion rocks and it took up way too much of my time last summer.