du -hsx * | sort -rh
April 26, 2012 — Vaevictus
sort supports -h for human readable number sorting.
Probably a newer GNU only option for sort. :D
for i in G M K; do du -hsx * | grep "[0-9]$i\b" | sort -nr; done 2>/dev/null
April 14, 2012 — bashoneliners