Matt showed up in my reader with this which I discovered is quite noisey on the intertubes right now. Here's my top ten.. Explanation below.

bsmith@ops654 [02:04:47 (0.00)] ~ 
-> history|awk '{a[$2]++ } END{for(i in a){print a[i] " " i}}'|sort -rn|head
225 winto
82 ls
70 ssh
66 vi
65 checkuus
64 mssh
54 dig
53 cd
50 ping
41 cat

1. winto is a wrapper for screen that does this: screen -t $1 ssh $1.
2. I have to know what I'm looking at.
3. I'm a sysadmin, I'm all over the place.
4. Sysadmins write code and manage config files too.
5. A script that checks pool of servers that can cause some problems in our enviroment.
6. "mass ssh" do cool stuff on bunches of servers (must have in my world)
7. "What the hell is this ip?!"
8. Moving around..
9. "Is that server alive?!"
10. /dev/urandom ?