It is absolutely absurd how much extra value-producing work you'll get done if tasks which routinely take you 10 minutes take 5 minutes and tasks which routinely take you 2 minutes just don't happen.
If you need some inspiration on what to put on it, I have an article on the topic somewhere... Here we go. http://www.kalzumeus.com/2010/02/09/dashboard-design-for-met...
If you are using Django you can get your daily/hourly reports that way pretty easily - set up a cron job to call something based on this...
from django.core.management import setup_environ
from datasvcs import settings
from django.core.mail import send_mail
from django.contrib.auth.models import User,Group
from yourapp import models
# Do model query magic here - compile report as a string.
Smart man. Aside from customer support information, everything on my dashboard is cached for 24 hours. I do this specifically because I used to waste far, far too much time sitting on Google Analytics mashing refresh. Mashing refresh on the dashboard just shows me the same thing I saw that morning. (I have a URL available which forcibly purges the cache, but it requires me to type in something like i-have-nothing-more-important-to-do-than-this in my URL bar. I think I've used it maybe twice.)