System Shock 2 has lots of updated graphics already, search for system shock rebirth. I've raved about how much I love the game before, so I'll spare you those details, except to say I've now completed it 6-7 times! :O It's not as complicated as it looks, probably one of the easiest RPGs to get started on.
Tie fighter would be top of my list, should be so easy with the x-wing alliance engine or something similar. Can't see cannon fodder working really though. I played it the other day on my Amiga 500, it's still fun now