bakert tagged me, so:
brianm@binky:~$ history | awk {'print $2'} | sort | uniq -c | sort -k1 -rn | head
164 svn
52 cd
42 ssh
32 sudo
22 git
16 ls
16 for
14 echo
13 man
10 curl
brianm@binky:~$
Sadly, I only seem to keep a 500 line .history -- need to fix that.