PBS job table
This is something I wrote in my day job at the NCI National Facility. It displays the layout of jobs (computing tasks) running on a supercomputer cluster, and uses AJAX techniques to allow the user to inspect the performance of individual jobs.
This system is written in Python, using bindings to the PBS batch system API, and uses the Mochikit AJAX toolkit. It requires no per-cluster configuration, and uses RESTful URLs to specify the cluster of interest.