Teaching optimization (Optimalcode)

The best source on web for optimizing delphi code was always Robert Lee's http://www.optimalcode.com. But this site was closed somewhere in 2003.
But thanks to the wayback machine little is lost. the last version of the site can be read here: http://web.archive.org/web/20030605130659/www.optimalcode.com/index.htm. Most pages are there, but some of the zip-files are missing.
When playing with the links I came across Jake's Code Efficiency challenge hosted by another of the slcdug bloggers, John M. Jacobson . It proved that delphi was as fast as any other language.