I am downloading my 32X ROMS from ROMnation. Shift+Command+3 captures the entire screen and is even more cumbersome than command-S or even Print Screen on Windows. PS3 controller doesn't seem to work on the Mac.
I use a USB Xbox 360 controller since I already have it. A button on the controller to press in the heat of the moment gets the best screenshots.
Otherwise I have to pause it and pause screens aren't always clean (they may resort to a menu or say PAUSE or whatnot). You can't play the game and press Command-S all at the same time.
