Below is a little cron item I conjured up today to report the top 50 directories sorted by space.  At some point, I may work on fixing it so it only reports bottom level directories.

du -h /exports/projects/ | sort -h -r | head -n 51 > /tmp/topproject.txt && mail -s "Linux Projects Top 50" myemail@mydomain.com < /tmp/topproject.txt