This is what I have on my desktop:

http://imgur.com/snqht

They refer to:

• minutes asleep / minutes in a day
• minutes in the category 'social' / minutes in a day
• (minutes in productive categories - minutes in my 'waste' category) / minutes in a day
• Success rate of all habits
• habits succeeded today / number of habits

(I've had this data for a long time, but these scripts are relatively new, and I plan on making it more configurable so that I can drop the "sleep" metric from my HUD, since it doesn't usually change over the course of the day.)