I was just thinking on Saturday that Ultima VI: The False Prophet is probably one of my favourite games that would work on our first real computer (which was an IBM PC 286). I love the PC version. I don't know how different the Super NES one is, and I guess Ian Albert already tackled the PC version on his site.
And yes, we could use some Final Fantasy IV and VI! I mentioned earlier how surprising it is that they haven't been tackled earlier. (Or the series as a whole! Labelled Final Fantasy (I) maps would be sweet, maps of the formerly-Japanese-only II, III, and V would be helpful, and as there are PC versions of VII and VIII and those have prerendered backgrounds for the most part, I imagine those should be relatively easy to map...IX would be really cool too, I liked that more than most people seemed to...well, that's pretty much the whole main series that's (f)easibly(?) mappable, and I think one of the biggest RPG series deserves at least some of these!)
I'm too lazy to check if it was mentioned earlier, or to look it up, but wasn't there a Super Game Boy or Game Boy Color Lufia game?