I am +1 to list better more people than less. I don't think all 227 commiters should be necessarily printed but "100 commits" limit is too much. I can recognize people with more than about 50 commits overall and more then about 10 commits in last half year. This list can be sorted by number of commits or not.
And I think that "Authors" isn't appropriate name for this list, better is "Contributors". I don't feel like an author of PHP Documentation even if I made 641 commits (by Goba's list). Goba, thanks for moving things forward. Jakub Vrana