I think it depends on what I'm shooting, and how I'm shooting it.
I've recently got back to shooting film, and certainly, because of the cost & effort of development, I spend way much more time taking one shot, and the "success rate" is much higher than shots taken with my K20D.
However, for that very reason, there is no way that I could take a photo like:
with my film camera.
Or, like this that I took last night:
I think that one was like one that I liked out of 100 shots or so
But, even with digital, if you know what you want to take and know how to take it (which does, obviously, take practice), all you need is one shot.
OK, that's actually 4 shots, but that's because I needed 4 to stitch together to make it. I had absolutely no time at all, so I set my tripod down, set up the pano head and camera (sorry folks, that was a 5D), took one shot in Av mode to get proper shutter speed, then took those 4 shots in Manual mode without any retakes.
But you are right, and this is something I've learned fairly recently and have been telling myself; you do want to get out of that "Shoot as many as you can and pick a good one" mentality of P&Ss. In most cases when you do that, you just end up with many many crap. Since I just moved over from a P&S to a DSLR last summer, I've been training my trigger-happy finger to take a deep breath and wait before firing off. I'm getting better at it, and the "success rate" is definitely going up :-D