I know this thread is a year old (literally), but I feel it's something that needs to be brought up again, since according to certain people, 30 FPS is "unplayable" and a slideshow. I'm hearing Ocarina of Time runs at 20 FPS. Is that true? Because if so, then I think a lot of this frame rate bellyaching with modern games is being grossly exaggerated.
Not to say 60 FPS isn't something to aim for on a current machine, but it seems kind of ridiculous at this point that some people will refuse to play anything under that.