flight sim games always work pretty well in an arcade cabinet....
as long as you have an analoge stick that is
mortal kombat 4 is great too
oh any virtual fighter cdrom or any of the cinematronics games (either mpeg rips or for those who aren't working yet the cdrom versions) work good
i've tried black and white too, but realized it's kind of too slow paced to play on an arcade cab.
your favortie flavor of quake/doom is good to
also those atari re-makes are really good, like pong, frogger, ect... iv'e heard the new pacland 2 is gonna be ported to pc as well