At YAPC 1999 Jon Orwant gave a talk where he analyzed all the modules in CPAN for character frequency. He extrapolated this into the Perl keyboard, of which someone took a picture.

More seriously: getting the tools to automate stuff for you is excellent, but augmenting it with really fast typing gives you great perl-fu. Not thinking about the keys you're hitting puts less impedance on the thoughts flowing. Getting a programmable keyboard doesn't hurt either. (clemburg has more experience with remapping the keys on this keyboard)

Chris
M-x auto-bs-mode