Gillette's fanaticism with R&D
That reminds me: http://www.theonion.com/content/node/33930
You've stumbled onto a pet obsession of mine, so I'm compelled to comment. This isn't hacking-related, so apologies in advance.
The most important element of a good shave is by no means the razor--it's wetness. If you start using a shaving brush and a good cream (the kind that comes in a small tub, not an aerosol can), and make sure your skin is always wet, the improvement is something like switching from a chainsaw to a scalpel.
Secondary to that is the razor. In my experience, the best shaves are to be had with a single-blade safety razor. The learning curve is steeper, because it doesn't let you get away with all the bad habits and sloppy technique that pivoting, vibrating, multi-colored blades forgive. After three or four shaves, though, you're all set.
http://shaveblog.com hasn't been updated in a while, but its archive is informative and well-read by shavegeeks.
I am waiting for the shaver with laser blades...