admin/uploadcourse
Rory Allford has kindly provided this script for uploading courses as flatfiles to allow mass creation of courses
http://rory.allford.net/uploadcourse.tar.gz
as discussed in: http://moodle.org/mod/forum/discuss.php?d=27333
quoting from the README:
UPLOAD COURSE
Bulk course and category creation script using a standard comma separated file (CSV). For speed reasons, bypasses ADODB so only works with MySQL.
An example CSV showing the teacher enrollment facility is also provided, though this will not run on your site unless you have similarly named user accounts.
see also admin/treeprint