blame.txt

 git ls-files -z | xargs -0n1 git blame -w | perl -n -e '/^.*?\((.*?)\s+[\d]{4}/; print \$1,"\n"' | sort -f | uniq -c | sort -nr
 278358 William Stein
   5582 Harald Schilly
   2622 Nicholas Ruhland
   1117 William Jon Nich
    909 Jon Nich
    715 Omnibase
    620 Vivek Venkatachalam
    596 Jonathan Lee
    376 Christopher Swenson
    363 Nicholas/William
    338 Vivek William Travis
    309 william jlee nich
    291 Russ Hensel
    219 Nicholas and William
    142 Vivek Travis William
    119 William Nich
    119 jlee27
    104 william+nicholas+jon
     72 salvus
     72 Bill Page
     69 rolles
     57 william jlee
     51 Salvus
     47 Nich William
     43 ahuchala
     35 R. Andrew Ohana
     32 Travis, Nich, William
     15 Andy Huchala
     14 William/Nich
     13 Jeff Lutgen
      9 Vincent Cloutier
      6 Nik Nyby
      1 William A. Stein
      1 Issa Rice
      1 evelynmitchell