Jon Fila, a faculty member of National American University (in MN, USA) and co-creator of Moodleshare.com a Moodle site sharing site recently posted a few free courses available for download from his site: http://moodle.jonfila.com.
The courses available from his site cover mostly English related topics (Dune, the Hobbit, English Comp), however he also shares a very handy course template for teachers to create course resources (from a starting point).
Each course is available at: http://moodle.jonfila.com/course/category.php?id=5
The courses are a great starting point for any teacher looking to reuse/remix Moodle content on their own site. Note that all of the courses are released with a non-commercial, share alike Creative Commons license.