In addition to rolling your own Nagios UI, there is Nagvis http://www.nagvis.org/ for Maps. I was using a much earlier version, but the latest versions look much easier to implement and very promising. I have also been known to use Cacti with Nagios watching the RRD files every few min so I can still get my performance monitoring while letting Cacti do all the work. I had Nagios check the Cacti RRDs because Nagios has better options for communicating events.
Slashdot videos: Now with more Slashdot!
We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).