Taken from snipplr.
For example to copy the site biweeklypay.ucsc.edu on your local filesystem and be able to view it with all images and style sheets, use the command (all on one line):
wget --recursive --no-clobber --page-requisites --html-extension
--convert-links --restrict-file-names=windows --domains ucsc.edu
--no-parent biweeklypay.ucsc.edu/