Archived from groups: alt.games.mame (More info?
I seem to recall there is a MAME screensaver that cycles through random
attract modes as well. I also seem to recall that you could then invoke
the game directly from the screensaver if you so desire. It's not a
frontend per se but it might work for what you're looking for.
Screensavers can be added to the startup group to launch on boot if
that's what you're looking for as well.
Anybody remember what screensaver that is? Am I remembering right?