I wrote
AddBad, a
Perl-based anti-vandalism program. Virtually all my edits (and there were over 10,000 of them) in that year were reverting vandalism and issuing warnings.
2015
Poldark Mine (completely re-written and de-spammed)
Sylvia Sayer (expanded from a stub) - DYK with 5,294 (corrected) views.