The millenium seemed to spur a lot of people to compile "Top 100" or "Best 100" lists of many things, including movies (by the American Film Institute) and books (by the Modern Library). Mathematicians were not immune, and at a mathematics conference in July, 1999, Paul and Jack Abad presented their list of "The Hundred Greatest Theorems." Their ranking is based on the following criteria: "the place the theorem holds in the literature, the quality of the proof, and the unexpectedness of the result."
T. Collaboration. (1995)cite arxiv:hep-ex/9503002
Comment: The file below is a Latex file and is 17 pages long including
figures. The link to the CDF Page containing this document is
http://www-cdf.fnal.gov/top_status/top.html.
S. Abachi. (1995)cite arxiv:hep-ex/9503003
Comment: postscript available at http://fnnews.fnal.gov/top_paper_dzero.ps,
for further info see http://fnnews.fnal.gov/top_discovery.html.