What classic titles aren't emulated now that you remember? With the encrypted Sega games and now the Model1/Model2 stuff coming to life many of my arcade dreams have been answered (or are current WIP).

I do have a few things that aren't emulated that I'd love to see still, noteably:

World Rally (I played this years ago)
Starblade (3D layer is so needed)
Winning Run (and Driver's Eyes which I played years ago - first polygon F1 game before Virtua Racing!)
Buggy Boy (home versions were fun, never played the original)
B.O.T.S.S. - Battle of the Solar System, a kind of polygon robot walker game I played in a service station ages and ages ago

And on home console emulation, the SVP chip in Genesis/Megadrive Virtua Racing (as it looks dreadful on my TV and would be good to preserve it as it's got quirks the 32X version etc don't have - like hidden animals!)

What else is currently unemulated from your past?